Evan Handler ( Sex and the City) guest-stars on Shark April 5.... John Ventimiglia ( The Sopranos) is Caseman's AA sponsor on Six Degrees April 6, 13 and 27.... Lynn Redgrave is Ian's mother on Desperate Housewives April 8.... Kate Jackson ( Charlie's Angels) is Paget Brewster's ambassador mother on Criminal Minds April 11.... Mark Feuerstein ( 3 LBS) on Shark April 12.... Ken Davitian ( Borat) on Ghost Whisperer April 27.... And Jeremy Sisto ( Kidnapped) dials up Numbers April 27.