I was doing one of the Companions quests where he is your ally, when he would stop to talk to me during EVERY SINGLE FIGHT. It got so bad that I just stayed in that dialogue and let the Silver Blood beat the crap out of him. When there weren't any enemies, I would take my sword out and beat him with it until he went into the kneeling stance. I also would shut doors on him and "Fus Ro Dah!!!" him.
Another time, after recieving the last quest, I decided to explore the game world. (Remember: At this time in the questline, all Vilkas can say is "For Kodlak!") I came across this tower with a quest called Repentance (Awesome quest by the way. Made me cry at the end when *%$% killed *^& &$*$#@) About halfway through the tower with the woman that accompanies you during the quest, I start to hear a faint "For Kodlak!!" in the distance. "Oh God!" I say to myself as I see him walk through the door, greatsword in hand, constantly yelling, "For Kodlak!!". At the time when she has to tell you her plan to *%## her &$*$#@, it's constantly stopped by Vilkas's "For Kodlak!!". Eventually, I "Fus Ro Dah!" him and beat him to death with my bound sword just so she could get through the dialogue and move the quest forward.
Anyway, thank you all for bearing through my rant. And Bethesda, if you're reading this, PLEASE fix this annoying glitch!
P.S. I censored some words because this part of the forums should be SPOILER FREE.
