I'm pleased to announce Completionist. A reference app for the iPad. Obviously it uses the Comicvine API and is completely free.
Features are a little limited at the moment, but I'm planning on adding more goodies soon, I just didn't want to hold the launch any further.
If you like it, please add a review, I'd really appreciate it. If you don't... well errr... don't :)
Completionist in iTunes