It think that people just acknowledging that it's my birthday is enough these days. Presents are just a nice little bonus.
As for the best one I've gotten, well, I'd say that'd have to be the Toyota Corolla I got on my 20th birthday being that it's the most expensive.. that and I wasn't stuck on the minimal travel of the bus anymore.
I got Animal Crossing City Folk for my birthday from my parents. It's a horrible sequel, but I do not blame my parents at all for that. I'm happy they got it for me, just wish the developer's themselves wouldn't have been so incredibly lazy.
I'm still waiting for my Christmas present from them.
I got $50 from my grandparents... Of which I haven't even been able to spend. -_-
My birthday presents are usually combined with my Christmas presents, so it's hard to remember which is which. But my best present is without a doubt my Canon Rebel XR camera. After that, probably my acustic guitar. Other than those, there hasn't been anything that's really stood out much. My family can't afford very much, but I'm happy with whatever I get.