Listening to music is banned at work, so I don't get to hear anything till 5:00pm when I tune into Radio 2 - but only for the travel news, I then bung in a CD. At weekends I find Virgin to be a reasonable station, easy to listen to for all ages, though the adverts do get on your nerves a bit. Saturday afternoon is shite, unless you like football as they interrupt songs when a goal is scored.
6 music is my favourite.. great mix on old and new indie, rock, classics etc.. with a bit of a leftfield slant. Quite funny too. Marc Riley is hilarious.
If you're near a computer then tryr some Internet radio - if you use winamp then all you have to do is open the media library and take your pick. I spent most of yesterday afternoon listening to Polish dance music, which isn't really my thing but made a pleasant change.
Radio 2 in the afternoons. (hell, most of the time really!) But normally switch it over to radio 4 and all the serious stuff from 5pm.
Mark Radcliffe late at night on R2..... from 10pm i think. Good yap and good music.