Jane became co-producer on Buffy after working only one year on the set as a writer. She kept her status as a producer until the end of the series.
Jane has written some scripts for the various Buffy the Vampire Slayer comic books.
Jane is the editor of Finding Serenity: Anti-Heroes, Lost Shepherds and Space Hookers in Joss Whedon's Firefly (BenBella Books, 2005), a collection of non-fiction essays on the short-lived television show Firefly.
Together with Drew Goddard, Jane got the Hugo Award for Best Short Dramatic Presentation, for the Buffy episode "Conversations With Dead People" in 2003.
Some of Jane's more comical episodes are often referred to as "Espensodes" or "Espisodes".
Jane has stated that her favourite Buffy episodes are the stand alone ones. Preferably funny ones without the arc-y and dark feeling.
Jane has been called "The Queen Of Comedy".
Jane has stated that she and the other writers on Buffy the Vampire Slayer made Buffy start to work at a hamburger restaurant because it is the worst job imaginable, and they really wanted Buffy to hit rock bottom.
Jane has stated that the character on Buffy the Vampire Slayer she identifies the most with is Anya.
Jane's first real job as a television writer was on the sitcom Dinosaurs.
Jane has stated that she was really nervous about writing the episode "Afterlife" for Buffy the Vampire Slayer, as it was such a dark episode without much humour, which is her strong side. She did, however, get a lot of compliments for it, and afterwards didn't feel as frightened of writing more dark and dramatic epsiodes with less comdey.
Jane has stated that she will always love the Buffy episode "Band Candy", because it was the first she wrote, but that her favorite is either "Superstar" or "I Was Made To Love You".
Jane used to write for sitcoms before she ended up in the Buffy crew, where she's known to write very funny episodes.
Jane is often regarded as the funniest writer of the Buffy crew.
Jane (About haveing a pleasure robot of her own, and who it would look like): Earlier on, I was talking about Davey Jones of The Monkees. Ladies of my age may remember him. That would be nice. Probably, just some movie star that I like I suppose. Boy, the mind just kind of goes in big leaps doesn't it.
Jane (About Joss Whedon): Every now and then he'll plant something and he doesn't realise that it's going to pay off later. In Doppelgangland, Willow is observing Evil Willow and she says, "I think she's kind of gay". Joss didn't know that was going to pay off later, that the Willow character in fact was gay but, sure enough, it paid off.
Jane: I recently had to wait two and a half hours in a doctor's office, just waiting to be seen. I literally was genuinely thinking "Well, maybe this is a time loop", because nothing seemed to be happening, no progress of any kind seemed to be being made, so I think we've all fallen into those time loops.
Jane: (About the Buffy the Vampire Slayer episode "Flooded") We wanted to take her out of heaven and put her in the most horrific and yet prosaic of situations, just the business of day-to-day life. So that really came much more out of the necessities of the season than out of any household problems Doug and I might have been having.
Jane (About the episode "The Replacement", Episode three of Season 5 of Buffy): I had actually pitched a double Xander episode in one of my first seasons because I thought, "We've got an actor with an identical twin, how can we not use this, this is such an opportunity. We can do the shots without having to do the cheesy green screen thing, we can use both actors." It just seemed like a natural to me so I was really happy when I got the opportunity to do that. An interesting nugget about that episode was it was originally called Real Me (the eventual title of episode two) and we decided to change it because we didn't want to give away the fact that both Xanders were real. They were both Xander.
Jane (About writing comedy for Buffy): Marti will write an episode that will tear your heart out. That's great, that is really cool and I'm so glad she can do it because I can't. I like to write comedy, so I would be delighted that every time there's a funny episode [they] just hand it to me. I'll take it.