Discussion: Favorite pairings??

What's your favorite pairings? Or Pairings you'd like to see.
So... what's your favorite Charmed/Smallville crossover couple(s)? [Why?]

Chloe/Chris
Chloe/Wyatt
Chloe/Coop
Clark/Piper
Clark/Prue
Clark/Phoebe
Clark/Melinda
Clark/Paige
Oliver/Piper
Oliver/Prue
Oliver/Melinda
AC/Piper
AC/Melinda