Fighting Spirit. A boxing anime. But even if you don't like boxing you should see this. It's pure quality all around.

Kimagure Orange Road. The best romantic comedies were made in the 80s before stereotypes set in. This one was one of the best. With 48 TV episodes 8 OVA episodes and a movie. All leading up to one of most enjoyably bitter-sweet endings in all of anime.

(KOR movie: I Want To Return To That Day is one of the best anime films ever made. Fantastic even for those who haven't seen the show.)

The Original Lupin The Third TV Series. Which followed closer to the original manga than it's successors. Unfortunately it's not available on the U.S. market, but you can buy the chinese set off eBay or watch most of the episodes online at CrunchyRoll.com

And if you have the cash for it I highly recommend Urusei Yatsura. There's over 50 DVDs released from AnimEGO. Expensive as hell, but the show is a riot. Urusei Yatsura Movie 2: Beautiful Dreamer is not to be missed. (IN JAPANESE ONLY! THE DUB STINKS! DO NOT WATCH IT ON THE FUNIMATION NETWORK! YOU'LL TAINT THE EXPERIENCE! THE SAME GOES FOR PROJECT A-KO!!!)