I have the Boozed, Bruised, and Broken Boned (I think that's what it's called) DVD and it's got some great riffs on it... I like Graveyard Disciples and Demise of Sanity a lot... Bleed for Me gets me going too... I love Zakks Riffs... Him and Nick definitely destroy all when they're playing together.
If you want to check out some other cool stuff from him DEFINITELY check out his Pride and Glory side project album pre-Black Label... and also his Book of Shadows CD... both are awesome...