An SSL/TLS handshake requires at least 10 times more processing power on a server than on the client. SSL renegotiation attacks can readily take advantage of this asymmetric workload. Watch this video to learn how to easily mitigate these attacks.
Yet another jailbreak app, NES is a Nintendo emulator. When paired with a collection of NES ROMs, this app allows you to play Super Mario Brothers, Paperboy, and any other original game for the Nintendo Entertainment System. The controls can be a little hard to get used to, but as far as the geek factor goes, this has it in spades. Free through Cydia.