Amazing. There are no words to describe how smart, considerate, devoted, funny--even, gasp, cool--Ezra is.
He TA'd two sections in Alan Brinkley's America Since 1945 class, and blew me away with how prepared and knowledgeable he was. But perhaps you expect that from your history TAs. Ezra, though, got people to talk (a lot) in class, made new points about the readings, all of that.
Plus, he wrote responses to all of our CourseWorks posts (in chickenscratch) and wrote pages upon pages in response to our midterms and papers. He puts as much effort into reading and responding as we do into writing, and this invariably motivates his students to work harder.
On top of that, he has some exciting areas of academic interest that aren't the old-guard American history stuff you might be used to. And he's obviously passionate about them, too.
If there are TAs better than Ezra (tee hee) here, I certainly haven't found them.