Episode as a whole, with the whole Isis plot was rather 'eh', but moments throughout the episode are what made it a pretty decent episode, especially since it had to follow the epicness that is last week's ep.
The Good!Tess bits were actually awesome. I'm loving her as a good guy..or good-ish guy. The parts with Cat getting pwned at every turn were great too, especially when Oliver shoved her in the sarcophagus. I laughed pretty hard.
Then of course the Clark/Lois bits were great. I liked the line about her loving him, but sometimes he's a nerd. Reminds me of last ep when he called himself from the future a nerd. Either way, I too am happy he told her instead of chickening out and not wanting to tell her to 'protect' her and what not.
So all in all.. plot itself was meh (her outfit was on fiyah!), but the particular bits of the episode are what made it.