Well, I don't know how easy they are as I've played these songs so much that they are ingrained into my hand muscles, but I like playing;
Nirvana - Smells like Teen Spirit (This one is actually very easy and it's fun to just crank this out every now and then)
Tesla - Love Song (the intro only. It gets dull after that)
Rush - La Villa Strangiato (sp?)
Megadeth - Silent Scorn (This one is actually pretty easy. If you have someone on acoustic and someone on electric, it sounds unbelivable.)
Dokken - Alone Again
Shinedown - .45
The big problem with most songs that are easy to play is that they were written so that the other instruments would help flesh out the sound of the song making it so that no individual part will sound quite the same without the other instruments. Of those songs that I've l;isted here, they are either straight instrumentals (La Villa Strangiato and Silent Scorn) or the guitar parts from the songs are instantly recognizable and are the backbone of the song.
Also, Izret is right about checking out tabs. When I was first starting out, I would just wander around tab sites trying to find anything that I wanted to play and learning it. It really is the best way to learn if you aren't taking lessons.
@Nep
