Did anyone else get a "Benjamin Linus" vibe from the scientist? That kept occurring to me, as well as the "Evil" Glenn (Chris Hardwick nailed it by calling him that. I wasn't thinking "Evil" Glenn, but I was definitely thinking he's the Woodbury Glenn).
Not sure what's going on with the tea, but if it was to make them docile, why did the Governor mention and drink some? Unless if the scientist is like "Ben Linus" and is secretly controlling things.
I certainly noticed that Merle was, well for lack of a better term, "tamed" by the Governor. I didn't get the sense earlier that Merle would kowtow to any man, but he certainly did seem to defer to the Governor.