Probably going to get some [censored] for one of these.
Here are some songs that I remember learning that really helped me out..
Metallica - Nothing Else Matters
Nirvana - Heart-Shaped Box
Creed - One Last Breath (this one's pretty difficult for a beginner/someone who doesn't play a whole lot)
And that's all I can remember. Most of the stuff I learned probably wouldn't be considered popular in the way you're requesting.
Pretty much any Nirvana song should do the trick, though.