30 Rock, Dexter Kill at SAG Noms

Tina Fey comedy among top shows with three nods; serial-killer drama in first-ever Outstanding Drama Series Ensemble race

Dexter's having a killer week.

After wrapping up its third season in big ratings fashion, the Showtime serial-killer drama today picked up two Screen Actors Guild nominations, including one for star Michael C. Hall. 30 Rock, Mad Men, The Closer and the miniseries John Adams each picked up a TV-best three nods.

For the first time, Dexter's up for Outstanding Drama Series Ensemble—SAG's version of Emmy's Outstanding Drama Series. Its competition: the recently departed Boston Legal, The Closer, House and Mad Men.

30 Rock, Entourage, The Office, Weeds and, in a bit of a throwback, Desperate Housewives are up for Comedy Series Ensemble.