LorenzoJLucchini
Lorenzo uses Freenode IRC with the nick LjL. Lorenzo is an Ubuntu user from Milan, Italy. His favorite color is black.
His contributions to Ubuntu are hardly useful PHP scripts such as http://apt.byethost14.com (currently offline due to ISP issues) and horribly dangerous superuser mode hacks such as http://wiki.ubuntu.com/AutoDeb.
He also wrote some incredibly useful free software such as can be found at http://sourceforge.net/projects/micsimkit, simulating a CPU that is only described in a book and nobody ever even dreamed of using, and http://sourceforge.net/projects/z80sim, simulating a quite well-known and widely used CPU that already has, like, 100 simulators of.
Other software he started writing, he never finished. Well, the above isn't finished, either.
He has recently started using Android, and decided to try blogging about software for it at http://ljlies.wordpress.com.
He lives in a world were everybody's computer runs a free version of AmigaOS with memory protection.
Ubuntu IRC
I've contributed, as well as some hopefully useful help in #ubuntu, some hacked-together but possibly interesting bots for the channel.
The FloodBots help keep the channel under control, by blocking spam as soon as possible and letting the human ops deal with it later, more within human reaction times. Additionally, it makes life more fun by banning the wrong people and entertaining everyone with gratuitous mode changes.
BestBot is a bot in #ubuntu-bots that knows about a lot of Ubuntu packages, has them in categories and lets people vote on what the "bestest" in a given category is in their opinion. This makes it possible to easily redirect "opinion polls" from #ubuntu to somewhere more appropriate, as well as providing an user-contributed database of categorized packages. In addition, people add things like what's the best cheese to it.
MetaBot tries to spot and categorize questions in #ubuntu, and posts them again in #ubuntu-meta if they are left unanswered, for helpers to have a clearer insight on what needs resolution. It's fun because the categories it guesses are never right.
More Ubuntu IRC bots can be found at https://wiki.ubuntu.com/IRC/Bots.