Half-Nuked is a mod for Half-Life which replaces Gorden Freeman and his arsenal of weapons with Duke Nukem and a complete weapons overhaul. There are no new levels at this point, but I see a lot of potential with this mod. It was just recently covered by none other than GGGManLives. Take a few minutes and check out his video on the subject.
Gaming Palooza Empire has been putting out some really good Atari 2600 content recorded on original hardware lately. Here is Mountain King from CBS games for the Atari, recorded by hooking an Atari Jr model up to a VCR.
These videos are clearly unscripted and come out very regularly. It has been a fun series to follow. Enjoy!
I found these about two weeks ago and I couldn't have been more thrilled. My first true pickups in the wild in years, and my first pick ups (not counting Magfest) since I returned to physical game collecting.