If we're going with SCREEN men, I'd have to say my current lust shivers are caused by:
David Tennant
Christopher Eccleston (but only in Dr Who...leather trenchcoat...

)
Alan Cumming (yes even though he's gay)
Matthieu Kassovitz
Frederic Diefenthal (French actors. Both yummy).
And I'd quite like to corrupt Dick, Dom and Steven Mulherne.
EDIT:
Forgot to add Lory's criteria for attractiveness are right on the money!