I think the best episodes have Zapp in them. He is so full of himself. The things he says and does are hillarious as well as Kif's reactions. If any charactors should have a spin-off it's Zapp and Kif. Their adventures in flying across galaxies and teaching alien women to love.
"A well calculated move straight out of Sun Szu's classic text - The Art of War... or My own masterwork - Zapp Brannigan's Big Book of War." Zapp Brannigan (Love's Labor Lost in Space)