There was a station when I was growing up that played reruns of Mission Impossible that started with the Pre-Jim Phelps year and went all the way through to the bitter end. It wasn't worth watching past Nimoy's stint.

I still love the episodes with Barbara Bain and Martin Landau. It's so old school Cold War spy cool.

The revival I could never really get into, but a gender swapped version would be fun to see.