Batman and Green Arrow by Mike Grell

A little flashback to the 'Longbow Hunters' era of the 80s.
Pencilled and inked by Mike Grell.

Batman vs Mr. Freeze by Ken Hunt

You're too late - fight's already over ;)
Pencilled and inked by Ken Hunt (here's his deviantart page).
Some pencil drawings showing the development of this commission can be found here.

Batman and Fearless Dawn by Steve Mannion

Batman and Fearless Dawn teaming up against Helga riding a T-Rex.
Pencilled and inked by Fearless Dawn creator Steve Mannion.

Batman and Rorschach/Nite Owl by Silvio dB

Batman hitches a ride on the Owlship. Pencilled and inked by Silvio dB.

Batman and Sherlock Holmes by Silvio dB

Two detectives having 'fun'. Pencilled and inked by Silvio dB (here's his deviantart page).

Batman meets Sgt DAD from Combat Jacks - by Jason Baroody and Mark McKenna

That's a definite first time ever crossover!
Batman and Sgt DAD (from Mark McKennas creator owned comic "Combat Jacks") are waiting for the next attack of the Jacks.
I sure hope at least one of them turns around soon...  ;)
Pencils by Jason Baroody and inks by Mark McKenna.

Batman vs Juggernaut - by Victor L. Castro and Mark McKenna

Pencilled by Victor L. Castro (here's his deviantart page) and inked by Mark McKenna (here's his website).
I had a lot of fun working with Victor and Mark on this one (okay, they did the work and I butted in with an idea a few times :)
In the previous post (which should be right beneath this one or here) there are a few work-in-progress scans of this commission, look it up.

Batman and Swamp Thing by Jack Purcell

 Penciled and inked by Jack Purcell.

Batman and Cassie Hack by Daniel Leister

Cassie Hack meets Batman in front of the Arkham Asylum.
Penciled and inked by Daniel Leister.
danielleister.deviantart.com