oh there have been so many!!!
at the moment I REALLY like Ollie from "Doctors" on RTE (though I hear he's left on BBC ;()
Some past/current crushes include :
TV: Jack Davenport (Miles) This Life - but Egg, Warren and Jo! would do too!!, David Paisely (Tinsel Town, Holby City), Sean Maguire during Eastenders days along with Jamie Mitchell and Dennis *yum*, Joshua Jackson (Dawson's Creek), David Mitchell (Fair City) and Dylan off Home and Away is a very recent addition - though I remember my real first crush was on the character Steven in that too!
Sport: Brian O'Driscoll *sex god*, Johnny Wilkenson, Andrew Merthens (Rugby)
Marat Saffin and Gustavo Kuerten (Tennis)
Frank Lampard Jr *Number1 crush of all time*, Jodie Morris, Zenden, Duff, Robbie Keane and too many footballers to mentiion besides that.
Alexi Nemov (Gymnastics) - *swon*
Gary Hall Junior, Curtis Myden, Alexander Popov, Torpedo (Swimming)
Llewellen Herbert and too many Athletes to mention!
and as for Actors : well Jared Leto is the absolute best when it comes to that category. Also like Ed Norton and Wes Bentley...and yes I had a crush on Kate Winslett too during the Titanic era!