(3) Pengo. Bobinator wrote a really good article for this already, but I want to try to cover as many Pengo clones as possible, because there were just a crap ton of them. I don't need reviews for all of them because that would be CRAZY, but just dig up the names, platforms, and screenshots of as many as you can. Most of them will probably be assorted European or Japanese computers. There's a forum topic that I bumped with a link to some. If you want to give any a shot, you can - he did write about a Windows game called Frostbyte Freddy which was pretty good - but it's not necessary. It'll probably just be a gallery anyway. If you find screens online, you can use them - no need to dig through emulators to specific screens unless you really want to.

As far as other tasks, if you could check out the Article forum for Pengo and dig up as many screenshots, ports and information of the assorted the clones, that'd be cool.

Percy Penguin (BBC Micro) [plays Toccata and Fugue in D minor by Bach]
Chilly Willy (Commodore 64)
Petch (Commodore 64)
Pengon (Atari 8-bit family, C64)
Pengi (Acorn Electron)
Igloo (MSX)
Troglo (Amstrad CPC) [plays Hungarian Dance No. 5 by Brahms]
Hopper (TI-00/4A) [different characters]
Freeze Factory (Commodore VIC-20) [horribly buggy]