Here is a weird fair sized map consisting of a bunch of small islands to fight across. It also has some really well done scenery, so check it out.
This custom map has some really well placed objects and such and is a must check out, even if it is a little small.
Here is a small little hell pit lovingly called [b]Camp[/b]. This map will make you afraid to go camping as you will be shot from every angle and right when you think its safe, its not!