My theatre-going in February didn't yield a real hottie so I opened it up to nominations. I'd like to say they flooded in but in the end I had two: Tobias Menzies in Uncle Vanya at the Almeida (thanks @chrisb715) and Russell Tovey in A View From The Bridge on Broadway (thanks @ahrmi). Guess who I chose? Sorry Tobias. To be fair Russell Tovey does have form, he has been a theatre hottie before.
PS There is a film version of the play The Pass which got Russell Tovey on the hottie list first time around so keep an eye out for that.