I shouldn’t really encourage you towards time wasting activities but it’s rock-paper-scissors against a Terminator hand!
Computers mimic human reasoning by building on simple rules and statistical averages. In this game you can test your strategy against the computer in this rock-paper-scissors game illustrating basic artificial intelligence. Choose from two different modes: novice, where the computer learns to play from scratch, and veteran, where the computer pits over 200,000 rounds of previous experience against you.
It is quite addictive, I warn you. Go here.