Gar Expert always makes me smile. He's my favorite of the currently posting /a/ name/tripfriends. In no particular order, I also like Cirno, 40%, Jacksonville, TN, Saigar_loser, Grammar Nazi, anime_expert, Anonymous of Germany, Teenage Angsty Mecha Pilot, and Anonymous of the Russian Federation.
My least favorites are Meru, Cat Waifu, (9)(9)(9)(9)(9)(9), and that guy that posts with Terek in the email field. (I think he went back to Animesuki after Saigar was canceled.)Fun fact: Tripfriend and (9)(9)(9)(9)(9)(9)ad nauseum have Gaia Online accounts that they post with frequently. I accidentally discovered this when I Googled the word "tripfriend."