Llama, getting a melee weapon skill, magic damage and healing spells is a pretty decent decision for any adventurer

and it's also one of the better options in Oblivion
Rdonj, try the warhammer 40K dawn of war games.. much less focus on base builing (the upcoming part 2 even less I hear) and more on units and taking territory. Also a very nice setting, some rpg feel (for RTS with leveling troops and commanders etc). From the same makers there is that WW II game which is very good too.. taking points on the map for unit caps etc is a good idea and used much more these days.
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Want a blend of
fantasy and
sci-fi? Try the total conversion
Dominions 3000 mod with a new and fully modded solar system map.
Dragons wanted? Try the
Dragons, Magic Incarnate nation.
New and different undead nation? Try
Souls of Shiar. Including new powerfull holy magic.
In for a whole new sort of game? Then try my scenario map
Gang Wars.