Tony-winning Celt Brian F. O'Byrne is on board for the second season of Showtime's acclaimed Brotherhood, premiering in the fall. O'Byrne, who grabbed his Tony for Frozen (and also netted a nod for Doubt), will play Colin Carr, a cousin of the Caffree brothers who gets embroiled in Michael's criminal world.

Also per Showtime, Cybill Shepherd and Marlee Matlin will be back for The L Word's fifth season (unspooling in January 2008), while Rose Rollins will return as Iraq-war vet Tasha; David Morrissey's Meadowlands premieres June 17; Weeds Season 3 begins in August; and Dexter Season 2 arrives in the fall.