Re: Ipad Commercial
In a word, yes. I use my iPad for pretty much everything except serious (ie: Photoshop / programming / 3d modeling) work. I work out of a home office, so being able to catch up on email and news while curled up on the couch is a lot easier and more comfortable with iPad than with a MacBook Pro. For those times when you're not doing any heavy typing, being able to hold just the part that matters (it's only the screen) really helps.
The one thing I'm not totally sure about for your particular case is uploading files from disk via the web... I don't know that Mobile Safari supports that, but as they say, there may be an app for that.
One other big feature for me is the battery life... it's really unbelievable. I've had situations where I've watched TV for 2 hours on iPad fully charged and afterwards it was indicating 90%. I don't think I've managed to get the charge down past 50% since I've had it, and those days were /HEAVY/ use. Apple quotes 10 hours, but I think you could easily go a bit over.