wow, seeing as there are only a few submissions here, I might as well submit mine: sf_towers, an sf_tactical style map with three towers, one neutral, and one for each team. gameplay focusses around controlling the central tower, and once one team has the central tower, they have a massive advantage, and can build right up to the other team's fort.
**LINK**
http://www.kittsplace.com/klingenco/.../sf_towers.bsp **LINK**
*no-frills shot showing layout*
http://www.kittsplace.com/klingenco/...towers0006.jpg
*what it looks like to the player*
http://www.kittsplace.com/klingenco/...towers0012.jpg