So this is how my ending went.
I banged Ashley Williams. Hot.
I didn't choose Liara, dunno why. I'm not into interspecies erotica.
I brought her (Ashley) and Garrus along. They seem like the most balanced to me, IMO. We're all combat, Garrus is the tech guy, and I'm the biotics guy, and Ashley looks pretty. For a CGI animation.
Anywho, when I encountered Saren in Citadel Tower... I used charm and he killed himself.
How climactic.
I then ordered... for some reason... for everyone to save themselves and wait for Sovereign. BYE BYE COUNCIL, YOU BITCHES. Maybe in my second playthrough I'll save you. Maybe.
...shoulda made me a Spectre the minute I stepped into Citadel, dammit...
Anyway, Sovereign possessed Saren anyway, Saren became like one of those crazy-ass Geth jumpers, and boss fight blah blah blah I win the end. Took me like four tries, but that's 'cause he shoots balls of light that take out 90% of your health after one hit. Sick bastard.
So, it wasn't as climactic as people said it was, but I guess that's 'cause I had Saren kill himself instead of me fighting him. So... yeah, I guess the game throws a surprise at everyone.
I picked Keith David for the Citadel council. His voice, like Morgan Freeman, can intimidate anyone. For shizzle.
EDIT: Regarding the post above me, I saved Wrex using Charm. I got a nice little achivement from that. Hehe.