Sheryl Crow was plugging P90X at the Grammys last night. I have a few friends that have been on and off the P90X system and it seems to be a good short term program but after they are done they seem kinda lost. For a similar tv/work out I would recommend
www.rippedworkout.ca For me the best excercise option is doing things outdoors as I like to get away from the TV and noise so I prefer biking, running, cross country skiing etc. along with swimming and hitting the Y a few times per week for the fitlinxx program they have along with some free weights. P90X has very good marketing and helps people learn discipline so it has it's place.