Crushlist
This list is pretty darn long, so I did it in alphabetical order by surname...

Bryan Adams [minus floppy hair]
Casey Affleck [This Is Our Youth]
Carlos Bernard [24]
Kyran Bracken [Saracens and England rugby player]
(young) Marlon Brando [Guys and Dolls]
Richard Burgi [24]
Jon Bon Jovi [short hair!]
Bobby Cannavale [Third Watch]
Michael Chiklis [The Shield]
Eddie Cibrian [Third Watch]
George Clooney [ex ER/One Fine Day]
Harry Connick Jr. [Hope Floats]
John Corbett [Sex and the City]
Kevin Costner [The Bodyguard]
Tom Cruise [Jerry Maguire]
Jack Dee [Celebrity Big Brother]
Johnny Depp [The Astronaut's Wife]
Vin Diesel [Pitch Black]
Robert Downey Jr. [Ally McBeal]
Scott Draper [Australian tennis player]
David Duchovny [The X Files]
George Eads [C.S.I.]
Jarrod Emick [The Full Monty Musical]
Emilio Estevez [Mighty Ducks]
Colin Firth [Bridget Jones's Diary]
Ben Fogle [Castaway 2000]
Michael J. Fox [Spin City]
Jan-Michael Gambill [USA tennis player]
Mel Gibson [Conspiracy Theory]
Cary Grant [lots of old films]
Hugh Grant [About A Boy]
Paul Gross [Due South]
Woody Harrelson [Cheers]
Matt LeBlanc [Friends]
Adrian Lewis-Morgan [Holby City]
Rob Lowe [The West Wing]
Josh Lucas [Sweet Home Alabama]
Matthew McConaughey [A Time To Kill]
Eric McCormack [Will and Grace]
Paul McCrane [ER]
Ewan McGregor [Moulin Rouge]
George Michael [Fast Love video]
Mark Moraghan [Holby City]
Gray O'Brien [Peak Practice]
Robert Patrick [The X Files]
Gregory Peck [To Kill A Mockingbird]
Mitch Pileggi [The X Files]
Brad Pitt [Ocean's Eleven]
Jeremy Piven [Ellen/Cupid]
(young) Elvis Presley
Keanu Reeves [The Matrix]
Callum Keith Rennie [Due South]
Sam Rockwell [Lawn Dogs]
Pete Sampras [Wimbledon 2000]
Rufus Sewell [Bless The Child]
Jeremy Sheffield [Holby City]
Sting [All This Time concert]
Kiefer Sutherland [24]
Michael Vartan [Never Been Kissed]
Goran Visnjic [ER]
Tom Welling [Smallville]
Bradley Whitford [The West Wing]
Jason Wiles [Third Watch]
Bruce Willis [The Kid/The Sixth Sense]
Noah Wyle [ER]