Splashtop Remote Desktop for iPad http://itunes.apple.com/us/app/splashtop-remote-desktop-for/... is specifically targeted at the same type of experience. I've used it to play games online, though not very successfully! They don't implement any security last I checked. http://support-remote.splashtop.com/entries/20132542-does-sp...

My iTunes affiliate account lists it as $2.99 instead of the $4.99 in the app store, so I'll drop this here even though it probably won't make a difference due to price change lag: http://click.linksynergy.com/fs-bin/click?id=yRSEY6MKcYc&...

Edit: sorry, meant to reply to ComputerGuru http://news.ycombinator.com/item?id=3701052 -- Splashtop does support sound/streaming video though.