I used to think that Rock Tomb was the best move ever, because of its animation in Sapphire, as well as Strength because of its Stadium 2 animation. My (horribly overleveled) Sceptile ended up knowing both moves and beat Winona by spamming Rock Tomb, after many failed attempts. I still don't know why I didn't use the Aerial Ace TM on Sceptile. Also, at one point I think his moveset was Cut/Strength/Rock Tomb/Flash. Yay for HMs! And since the OP said something besides a starter, I did also have a level 97 Machamp with Cross chop/Karate chop/Dynamicpunch/Focus punch.