Most ridiculous open-weight fantasy fights...

That would be awesome to see.
A few of my favorites:

Frankie Edgar vs Brock Lesnar

Allistair Overeem vs Jose Aldo

Stefan Struve vs Demetrius Johnson Phone Post 3.0

BJ Penn vs Jon Jones Phone Post 3.0

Mighty Mouse & Joseph Benavidez VS Cain V

komal - Ronda vs Cain. I think we can all agree on that being the #1 pick Phone Post 3.0
I would pay for 5 PPV's to see this fight
"On any given day..." Phone Post 3.0

At this point, Diaz vs anyone...

Aldo would beat Overeem Phone Post 3.0

Bob Sapphire vs Paul Harris Phone Post 3.0

I would like to have seen Matt Hughes vs Tim Sylvia

Ronda Rousey vs. Akebono

Mighty Mouse Vs Hong man Choi Phone Post 3.0

Bigfoot vs Uncle Creepy

Sloppy Single Leg -
sherlock1988 - 
komal - Ronda vs Cain. I think we can all agree on that being the #1 pick Phone Post 3.0
What are the circumstances? Phone Post 3.0

The right ones, of course.
Omg you freaking guys are funny. I love this place! Phone Post 3.0

Diego Sanchez vs mark hunt. Conor mcgregor vs nick Diaz Phone Post 3.0

Anderson Silva vs Anthony Pettis Phone Post 3.0

Bj v Cain Phone Post 3.0

Sapp vs pulver Phone Post 3.0

Reem v mouse Phone Post 3.0

Uncle Creepy vs Bigfoot Silva

Hunt vs. BJ Phone Post 3.0

fallon fox vs bob sapp