What's a good birthday gift for my brother?

I want to buy a gift for my 20 year old brother. Tomorrow is his birthday and I am in confusion what is the best for him. I want to give him a gift which he alway remember. please suggest me.

Well, do you know what he's currently into?(like a band, movie,game,book).Maybe buying him his favorite dvd (make sure he doesn't own a copy already and look out for special editions - same price, more features).Maybe a really cool poster of his favorite band?A book by his favorite author?Or what any brother would appreciate - a hand-made card.There are loads of pages online that could give you ideas for that, and I'm sure it's something he would definitely treasure.
Best of luck! Hope it all works out. :-)