Looks like there will be some competition for the iPad. BlackBerry will be releasing their PlayBook. No price announced as of yet and won't be available until early 2011, but if comic apps work on it (and I'm sure they will), I will have to seriously consider it . . .
"You are going to get a certain amount of snarkiness on the Internet no matter what, and my rule is that you don't post anything that you wouldn't say to someone's face." Marc Andreyko (Writer of DC Comic's "Manhunter")
I half agree with Llakor. It seems to me that your best bet would be to use YouTube for hosting your videos and one of the various photo hosting sites for the pictures (I'm fond of PhotoBucket, myself)