Same here, I spent most of last week downloading various technical hi-res videos (wmv) on the Microsoft .Net Framework for my job. I converted them using VisualHub and Handbrake to mp4 (960x768 seems to be best for iPad assuming a 4:3 ratio) and yesterday picked up my iPad and tried them out. They look great!
Similarly, PDF versions of my technical books also look great inside Goodreader.
This was my main motivation for buying an iPad, so if you're thinking about the same things, I say go for it.