8 p.m., NBCChevy Chase) signs up for a boating class, and Britta (Gillian Jacobs), Shirley (Yvette Nicole Brown), and Troy (Donald Glover II) join him on the open seas.
9 p.m., ABCPatrick Dempsey) takes on a bit more responsibility as interim chief at Seattle Grace—does that mean we can't call him McDreamy anymore?
9 p.m., FOXJohn Noble) discovers that a catastrophic earthquake in New York is actually connected to disturbing experiments he and William Bell conducted on Olivia (Anna Torv) and other children many years ago.
9:30 p.m., NBCJane Krakowski) mother Verna (guest star Jan Hooks) pays a disastrous visit (we finally get to see where Jenna's crazy comes from!), and Liz (Tina Fey) and Frank (Judah Friedlander) move in together.
Season 3 premiere, 10:30 p.m., COMEDY
Also on the airwaves...
The Deep End, 8 p.m., ABC
Surviving Survivor, 8 p.m., CBS
Bones, 8 p.m., FOX
The Vampire Diaries, 8 p.m., CW
Parks and Recreation, 8:30 p.m., NBC
CSI, 9 p.m., CBS
The Office, 9 p.m., NBC
Supernatural, 9 p.m., CW
Private Practice, 10 p.m., ABC
The Mentalist, 10 p.m., CBS
Manhunters: Fugitive Task Force, 10 p.m., A&E;
The Real Housewives of Orange County, 10 p.m., BRAVO
Ace of Cakes, 10 p.m., FOOD
Archer, 10 p.m., FX
Project Runway, 10 p.m., LIFE
Randy Jackson Presents: America's Best Dance Crew, 10 p.m., MTV
Burn Notice, 10 p.m., USA
NCAA Men's Basketball: Portland v. Gonzaga, Purdue v. Indiana, Georgia Tech v. Duke, Florida v. Alabama, Cincinnati v. Notre Dame, Tennessee v. LSU, Cal State Fullerton v. Cal State Long Beach
NCAA Women's Basketball: Alabama v. Mississippi State
NBA Basketball: Spurs v. TrailBlazers, Heat v. Cavaliers
What are you watching tonight?
Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom