I re-read the OP and I guess it might have come off as I was selling the subscription. I am not

I was just curious if anyone here has tried insanity or i similar home work outs on top of regular cycling.

@irulan - thanks, i wasn't offended, just confused haha
and yes insanity is like a more advanced (more cardio based) type work out than p90x. I've done p90x in the past but have heard of folks having great results from insanity. I guess i'll just take it slow. I'll just be bummed if i'll be too sore to bike =/