I missed the November 20th goal. He's only assisted on one of Crosby's goals since the January 2nd game and that was on January 20th, on the powerplay.
If I had to guess on the number of games that Crosby and Malkin actually played on the same line for the full game, I'd put it between 10-15.
Zubrus is not a 3rd liner, he's a pretty good player. Actually, a lot of Pens fans are suggested that they trade for him to put on Crosby's line.
Zubrus isn't a bad player as long as he has the right linemates. When he was with Leclair and Lindros he flourished. I still think he's a much better winger than centre and if he was put with Crosby and Recchi/Malone he would probably do really well. But he's not talented enough to carry a line on his own and I don't think his style fits Ovechkin's that much. A.O. needs a centre more like Marc Savard - a great passer that gets rid of the puck as soon as he gets it.