Hmm all time? Hard to say but I think these ones have stood on it for a long time. all in no order
Poe - Hey pretty, Wild, Amazed (oh I love so many of her songs!)
Eve 6 - Here's to the night
The caesars - jerk it out
scape goat wax - Aisle 10 (Hello Allison)
something corporate - punk rock princess
simon & Garfunkel - The boxer
Garbage - Push it, why do you love me
Enya - on my way home
Boa (not the korean band) - elephant
Foo fighters - everlong
Killing Heidi - weir
Incubus - drive
Oasis - wonderwall
Ayumi - ever free
The Brilliant Green - Eve no Kane (Angel song)
I have no idea who sang it, but the OP song to an anime I saw once called himikoden. The song I think is called pure snow... it's so pretty!