When The Hills and How I Met Your Mother Collide

Heidi Montag and Spencer Pratt are everywhere.

But The Hills' duo you love to hate (or just hate, let's be honest) hasn't broken into acting ... until now. Rumors are surfacing that a guest spot on How I Met Your Mother could be in Speidi's future. Please, try to contain yourselves from doing cartwheels.

Nothing is official yet, but the episode will supposedly air in December.

NOT THE SHARPEST TOOLS: The Hills' Heidi Montag and Spencer Pratt may not have any redeeming worth, but they sure can parlay their quasi-fame into serious cash.