Here is his 20 pt game against Boston as a rookie:
https://www.youtube.com/watch?v=Zv2Afs_1ILw&feature=kpand here is his 23 point game against the Rockets this last March:
https://www.youtube.com/watch?v=JkvP6ytFQX8&feature=kpAs to questions about his strength/bulk & rim protection:
While I don't know if Zeller will ever be much of a 'rim protector', I know that he came out of his rookie year knowing he needed to bulk up (sound familiar about any other bigs?) and he apparently worked hard last summer doing so. However, last October, he got hit with appendicitis and had to undergo an emergency appendectomy. This caused him to lose weight. I think it's probably related to the fact that he played better and better later in the year.
Hopefully, he still has body conditioning goals that he will continue to work on this summer.
He looks like he could be pretty comfortable carrying about 260 or so.
Overall, while he's still pretty young (24), with more development needed, I'd rate Zeller as fairly competent on most aspects of the game though not particularly stellar on any one thing. His strengths seem to be his ability to get up & down the court, his face-up game and ability to finish.