Guilds through other games

Are there more guilds that go on in many diffrent games?

For example:

In runescape,you have Damage Incorperated;one of the toughest clan's around.

Now the runescape clan was based on a Halo clan which also was very powerfull.

Yesterday at TOA I saw a DI guild recruiting,and yep its damage incorperated.

Do you know more of these guilds?

My guild plays UT, battlefield 2142, supreme commander, and WoW(some of us, not I, this has caused dissention in the guild, lol)

my current guild also competes in cal invite for call of duty under the name iLLicit Gaming, we play guild wars for fun

my guild plays AoE3 as well as gw