Which 2 movies or series would make a great crossover ?

Breaking Bad and The Walking Dead

Yes, or Elementary and House (all of these were based on the original Sherlock Holmes stories).

I think that would be an interesting pairing

Tomb Raider and Indiana Jones.

I don't like the newer movies or any after the first one, but Ice Age and The Land Before Time.

Sherlock and dr. Who. I saw a post about it the other day and I want it to happen!!

Weeds and two and a half men