If I was really forced to name just one, I guess it's gotta be The Beatles, simply because they've been one of my first noticeable influences, still impress me and I can always go back to them.
Not exactly comparable, but Pink Floyd are similar to me (until The Wall, which I already found to be not as great as their older stuff).
Otherwise, I absolutely love all sorts of funky stuff but there's no single acts I could name, let alone a number one, sometimes it's even just single songs.
Whatever, if I had to name a more or less recent band that I keep listening to, including concerts I keep visiting (3 times by now), it's gotta be the Foo Fighters.
But then, there's all the others - and it'd be a shame to not mention them. So, no real favourites from me I suppose (let alone that things change on a daily base).
