Male-male? Female-female? Male-female?
Any mention of a speech class/team of any sort and I get very excited. Speech is my life.
Check out the Brooklyn Publishers web sites (link for these - they're my picks.
MM: Prison Break
FF: Stop, Rain
MF: Fallen Princess. I have been using this duo for ages and it is without a doubt the scariest thing every written. Or, if they want comedic, I recommend Barbie and Ken.