I dont know if this has been done AND it is XTREMELY stupid, BUT I just couldn't resist.
All the Animorphs during a battle: *singing to the tune of Stayin Alive* <Ha, Ha, Ha, Ha, Kill all the Yeerks, Kill all the Yeerks! Ha, Ha, Ha, Ha, Kill all the Yeeeee-eeeeeerrrrrrrr-rrrrrrrrksssssss! Ha, Ha, Ha, Ha, Kill all the Yeerks, Kill all the Yeerks! Ha, Ha, Ha, Ha, Kill all the Yeeeee-eeeeeerrrrrrr-rrrrrrrksssssss!>
I'll try to come up wit more But let me know what you think