When Brian finally tells Justin "I love you" after Babylon is blown up.
The rooftop scene from the pilot. Brian's freaking out over the birth of his son, and Michael's there to tell him he'll be fine.
Brian: Let's fly, like in all those comic books. I'm Superman! I'll show you the world! Michael: Why do I always have to be Lois Lane? (turns around and hugs him) Congratulations, Dad.
Episode 19 of season 1. Though the first part of the episode is heartbreaking, Michael turning Brian's offer of sex down and supporting him through the death of his father is lovely. And the scene in the bowling alley where Brian (and his father's bowling ball) beat the team of homophobes is perfect.
Bowler: Fucking fairies. Michael: Hey- Brian: Yes, the fucking fairies have scored. The fucking fairies are jumping up and down. The fucking fairies - are gonna celebrate. (dips and kisses Michael)
As is the end if the episode where Brian throws his father's ball away (symbolically letting go of all his anger and resentment over the abuse) and Michael hugs him while Badly Drawn Boy's "The Shining" plays.
While the callback to Justin's bashing in season two is heartbreaking, Michael and Brian's friendship turns it to something heartwarming. Michael's boyfriend Ben is in the hospital, and Michael doesn't think he'll be able to hold it together. Brian reminds him that when it was Justin lying there, Michael was strong for him and he can be strong for Ben.
When Ted takes Blake under his wings in the first season, and when Blake does the same for Ted in the fourth.
Tracy standing up to Michael when the coworkers make fun of homosexuals, despite Michael having lead her on. A hell of a friend.
A quarreling between Ted and Emmett for Emmett cheating turns into Ted assuring Emmett he is still there as a best friend, too, and his flaws are also a part of the personality Ted loves, as his friend and as his boyfriend.
