If I'm home alone, I sing everywhere, not just in the shower :L
I like the kitchen best, the tiled floor gives it great acoustics =D
But, when the parents are about, I don't tend to sing much at all. Well, I don't mind so much if it's Dad, because he's tone deaf when it comes to music and can't tell me if I'm singing something wrong xD
But my Mum can, so I generally don't sing around her.
Personal favourites to sing at the moment:
Good Morning Baltimore
Anything Adam Lambert
Don't Stop Believing-- Journey, of course, I despise the Glee version. And I just have to make it clear that I've poved Journey for years, not someone who suddenly loved them when Glee, Joe McElderry or the stupid TV advert did it.
Bohemian Rhapsody. Getting warmed up for We Will Rock You next year =D