[TokuChris]

There's a lot of good ones to consider. I'll name some of them as I come up with them.

MMPR - White Ranger vs. Goldar (Opposites Attract)
Zeo - Anything with the Gold Ranger
Turbo - Phantom Ranger's first (and only?) fight with Pirahanatrons
In Space - Countdown to Destruction scenes
Lost Galaxy - Power of Ten team-up fight
Lightspeed Rescue - Titanium Ranger vs Lightspeed Rescue
Time Force - ???
Wild Force - Reinforcements from the Future Part 2 (TF & WF fight Mutorgs)
Ninja Storm - ???
Dino Thunder - "Fighting Spirit" scenes
SPD - ???
Mystic Force - Red Wolf Warrior vs Koragg
Operation Overdrive - Once a Ranger fight scenes
RPM - Dillon vs Tenaya
Samurai - Jayden vs Deker

Go for it!