For Nerd Machine I ended up with 64 caps, all about 608x342 pixels. Most of are Jared alone, but there are also a bunch of him with Zachary Levi. Some of the caps aren't great in quality, it wasn't as easy as I thought it'd be to make them. But I hope you like. I've got some sample caps and a link to download all 64.
And here's the link to download all 64: https://rapidshare.com/files/1249872761/Nerd_Machine_panel_screencaps.zip
For the Comic Con interviews (Jared's from Zap2It, Jensen's from Digital Spy), I managed to get 26 caps of Jared and 23 of Jensen. I've put them all together in a download link, but I'll post some samples below:
And here's the link to download all 49: https://rapidshare.com/files/473058400/CC_11_press_interviews_screencaps.zip
Enjoy! And if you have any questions, just let me know. If you want to use them for art or anything like that, feel free, although some credit would be nice. :)