For the first time ever (according to AppShopper: http://appshopper.com/business/splashtop-remote-desktop), Splashtop Remote 2 is free. I bought it a couple of days ago when it went down to 99c, but it's now free. It works really well and is very fast. For those that don't know what it is, here's the blurb from iTunes:
Splashtop is the easiest and fastest way to access your Mac or Windows PC from your iPad! Over 12 million users are enjoying Splashtop apps today, and you should too!
Use Splashtop to access your computer on the local network, with the best-in-class video streaming performance, Microsoft Office Suite and PDF viewing and editing, full browser access with Flash / Java support (IE, Chrome, Firefox), playing 3D PC/MAC games, and access all your media library and documents.
Access all your programs and files with 100% compatibility, including PowerPoint, Keynote, Word, Excel, Outlook, Quicken, IE, Chrome, Safari, and all other PC/Mac applications
Watch all the videos that are playable only on your computer, including Flash (Hulu, Youtube, etc.), DVDs, and Windows Media Player
Listen to the music library on your computer, whatever format it’s in (WMA, RealAudio, MP3, AAC, etc.)
Play all the 3D games (World of Warcraft, StarCraft, Skyrim, Diablo III, etc.) and all the Flash games (FarmVille, CityVille, etc.)
Enjoy the most vibrant experience with Apple Retina display support (when using native resolution)
Requirements on PC side:
* Install Splashtop Streamer on your PC (Windows 7, Vista, and XP), Mac (Snow Leopard, Lion, Mountain Lion), or Linux (Ubuntu 12.04). Download for free from www.splashtop.com/streamer
Edit: Added PC Requirements
Very good apps can play video over it and if you connect it to a Win8 you can use the touch function.