Are you familiar with Electrical Muscle Stimulation units? I saw them at www.bodyshapers.com and I was wondering what they would be good for. This would be ideal for me because it would push my body without making my mind force me to do "just one more rep." Any input would be appreciated.

Believe me, don't even think about it! The only thing these machines are good for is very specific rehab modalities when you have had nerve damage or are coming off a major surgery. Honestly, they won't do anything for speed development or greater muscle size for you! Believe me, I've tried it!!! Don't waste your money!