In October 2006, Phillips made a guest appearance on Boston Legal, playing the father of the boy accused of killing the wife of a judge played by DS9's Armin Shimerman. Besides series regulars William Shatner and Rene Auberjonois, Trek guest actor Ron Canada also appeared in the episode.
He played the title character of the 2003 short film Living in Walter's World, co-starring Deep Space 9 star Armin Shimerman, and played the role of "Mr. Gorn" in the short Roddenberry on Patrol. This short film, directed by and co-starring Phillips' fellow Voyager actor Tim Russ (Tuvok), offers a comedic look at how Gene Roddenberry created Star Trek and also featured Robert Beltran, Richard Herd, Walter Koenig, Nichelle Nichols, Robert O'Reilly, Robert Picardo, and George Takei.
Phillips' voice can also be heard on the Nickelodeon films The Wild Thornberrys Movie (2002, also featuring the voices of Brock Peters, Keith Szarabajka, and Alfre Woodard) and Rugrats Go Wild! (2003, also with the voice of Tony Jay). He has also lent his voice to a number of Star Wars video games
Following Star Trek: Voyager's end in 2001, Phillips again began making frequent television guest appearances.
He appeared in the acclaimed 1998 TV mini-series From the Earth to the Moon, as did fellow Star Trek alumni David Andrews, David Clennon, Ronny Cox, Clint Howard, Daniel Hugh Kelly, John Carroll Lynch, Deborah May, Andy Milder, Holmes Osborne, Mark Rolston, Stephen Root, and Alan Ruck.
In 2000, Phillips starred with Alan Ruck in the film "Endsville".
In 1998, he starred in the short film The Battery, written and directed by his Voyager co-star Robert Duncan McNeill. He would also star in McNeill's 9mm of Love, another short film which co-starred Liz Vassey and was made in 2000.
As Voyager continued its journey, Phillips took on other roles. In 1995, he co-starred with Next Generation star Patrick Stewart and Deep Space Nine guest actor Steven Weber in the dramedy Jeffrey. Two year later, he appeared in the comedy For Richer of Poorer, starring Kirstie Alley.
He had a role in the 1994 western comedy Wagons East. Also starring in this film was Robert Picardo. Both Phillips and Picardo would begin starring together on Star Trek: Voyager later that year. Coincidently, Picardo originally auditioned for Phillips' role of Neelix on Voyager before being cast as The Doctor. Wagons East also featured Ed Lauter and the late Charles Rocket in the cast.
In 1987, he co-starred with Lance LeGault and Raphael Sbarge in the pilot episode of the short-lived series Werewolf. He also appeared on a number of other TV shows throughout the late 1980s, including an episode of The Twilight Zone with Christopher Carroll.
He went on to appear in three films in 1989: the highly-acclaimed Lean on Me (also featuring Tony Todd and Mike Starr), the romantic comedy Bloodhounds of Broadway (co-starring Googy Gress, Stephen McHattie and Alan Ruck), and the Oscar-winning historical war drama Glory (featuring Bob Gunton, Cliff deYoung, Richard Riehle, and Mark Margolis).
After leaving Benson, he began to make a major transition towards films. He had a supporting role in the popular 1986 horror movie Critters with TNG guest star Scott Grimes, and the following year, he appeared in the comedy Burglar, starring Whoopi Goldberg.
While still acting on Benson, he made his feature film debut with a small role in the acclaimed 1981 drama Ragtime. Starring in this film was Phillips' future Voyager co-star Brad Dourif (Lon Suder).
He joined the series Benson in 1980 as Pete Downey, working with Rene Auberjonois (Odo of Star Trek: Deep Space Nine), who played Clayton Runnymede Endicott III. Phillips and Auberjonois co-starred together on Benson until 1985, when Phillips left the series.
He began his on-screen acting career playing "Pete John Downey" on the hit television series Benson. Although the series began airing in 1979, he did not join the series until 1980.
He received a Masters Degree in Fine Arts from Cornell University.
He played two different Ferengi characters, one on Star Trek: The Next Generation and another on Star Trek: Enterprise, and made an uncredited cameo as a holographic mâitre d' in the 1996 film, Star Trek: First Contact.
His own play, "Penguin Blues" has been produced more than 150 times throughout Canada and USA
He is also a playwright and an author.
His father was the owner of the famous New York steakhouse Frankie & Johnnie's, know for the "the most delicious sirloin in all of Manhattan."
Phillips received numerous requests from Neelix fans to write a cookbook. In 1999 his cookbook, "The Star Trek Cookbook" was published. Phillips co-wrote the book with author William J. Birnes.
He played in " Star Trek: First Contact " (1996) (Uncredited) as maitre d'hotel.
He narrated the "JASON" undersea probe exhibit at Walt Disney World's EPCOT Center's "The Living Seas" in Florida.
He graduated from Boston University with a degree in English Literature.
He is married with Patricia Cresswell since the 10 August 1990
His nickname is "Johnny".