Well I thought I'd glance through my mp3 list, but starting with Z.
I haven't really got any ZZ Top but Warren Zevon, I've got tonnes.
Glenn was the only Eagle not involved in Zevon's last album but I actually got 20 tracks Glenn could do IMHO.
Some Eagles played on a few of these:
Backs Turned Looking Down The Path
Basket Case
Battleship Chains
Boom Boom Mancini
Carmelita
Detox Mansion
Disorder In The House
Excitable Boy
Finishing Touches
Gorilla You're A Desperado
Hasten Down The Wind
Join Me In LA
Lawyers Guns And Money
Mama Couldn't Be Pursauded
Mr Bad Example
Poor Poor Pitiful me
Reconsider Me
She's Too Good For Me
Similar To Rain
Suzie Lightning
The Rest Of The Night
Not so easy with Van Morrison