My favourite Lemmings weapon is…

• climb
• float
• bomb
• stop
• build
• bash
• mine
• dig

My favourite Jazz Jackrabbit weapon is…

• Blaster
• Toaster
• RF Missile
• Bouncer
• TNT

Feel free to extend to other videogames that have a handful of weapons or forms.

Update: fixed the second copy of "climb" to "dig".

Update 2015-03-01: fixed second copy of "Toaster" to "TNT".