cheapo nifty fifty 50mm f1.8 is a pretty decent lens. Can't beat it for the price...
I had one for my canon, but gave it to my brother cuz I didn't have a use for it anymore.
I shot that with a Canon 70-200 F2.8L IS USM II lens (ballin')
It's probably my favorite lens in my camera bag and one that's almost always on my body.