The sixth season of the sidesplitting sitcom, which is set backstage at a “Saturday Night Live”-like sketch-comedy TV series, features an array of wackiness, its second live episode (“Live From Studio 6H”) and such guest stars as Kelsey Grammer, Ken Howard, Patti LuPone, Mary Steenburgen and Susan Sarandon.

• 30 Rock - Season 6
• Tina Fey
• Alec Baldwin
• Tracy Morgan
• Broadway Video
• Little Stranger
• NBC Studios