Hey. Can anybody give me some good jazz quartets that have a violinist in them?

I can't give you them, but I can name a few if that is what you mean. There are some swinging cats from Chicago that get down on some mean strings and things.

Here are some newer and classic jazz violinists:

Johnny Frigo
Joseph Kennedy, Jr.
Darol Anger
Joe Venuti,
Eddie South,
Svend Asmussen
& Stephane Grappelli

You know, google them too, there is all kinds of great stuff out there on jazz violin!