Personally speaking there are a few I sit and play when i'm on my lonesome.
Muse - Stockholm syndrome:
I just love the main riff in the intro to the song really.
Muse - Feeling good:
Theres like, 5 notes max that get played in this tune and 4 chords but sound good and is easy to sing along too...as long as you can get near Matt Bellamy's vocal pitch!
Breaking Point - One of a Kind:
Basically its just one of those tunes i'd never heard of until I bought an Xbox360 and started fighting people online on SvR07 with Rob Van Dam, since then i've began to like this song a hell of alot...but never on earth enough to play infront of anyone!
Guns N Roses - Don't Cry:
I love the song, only the second song I ever learned to play (the first was Welcome to the Jungle) and I really like te lyrics but I have a tendancy to absolutely muller the song!
Offspring - I want you bad:
Just a really fun song to play, reminds me of being 13 jumping around my bedroom, a bit like the next song....
Papa Roach - Last Resort:
As above, never understood the lyrics, just loved the guitar work on it
and finally, and most ashamedly...
The Darkness - I believe in a thing called love:
I won't even try to justify this... I'm sorry everyone
Ooh, yeah i forgot to say, i also mess around with The A-Team theme tune too on occassion, but not as much as I used to when I first started