Chateau Margeaux 1988!

Just kidding--a mid-priced chianti is good for short term drinking (next few years), but if you're looking for a bottle to put away for a while, check out some of the upper end Bordeaux.

Trader Joe's people, and people at most high-end liquor stores can help out. You have to know what your parents are into-- red or white, sweet or dry, light or rich, etc.