True, 8 mile.
Both are probably best known as session players, although the thought of Weckl usually brings to mind the phrase, "white boy phunk".
Still, to be a top notch session player (actually, a musician, in general) you should be adept at a wide variety of musical styles, Jazz included.
True "chameleons" of the industry.
...and speaking of Steve Gadd...
Not sure if you're old enough to remember the 70's (and it's ok if you're not), but Gadd teamed up with some top notch players back then and formed a band called "Stuff".
One of the better "forgotten" bands of the period.
If you're unaware, check 'em out - http://www.dailymotion.com/video/xl3...eux-1976_music