I've become a Steely Dan junky . . . . .

I've always loved Steely Dan and that Jazzy Rock sound. Lately however, I've become addicted and can't get enough of them. I've always been a rock fan, but I'd like to expand my collection with more of the jazz/rock sound. I've got all of Steely Dan's albums and Donald's solos also. If a few of you could turn me on to some similar recording artists, it would be appreciated.