Shuttlepod One was a fun episode and can show a light hearted side without them just being plain silly or incompetent. I just wish there was more follow up between Reed and Tucker on this one. Sure they're friends the rest of the series, but you don't see -too many- moments like this one later on. The episode isn't perfect and you can nitpick it easy enough, but it's enjoyable and makes up for that.
Fusion... well more Evil Vulcan Syndrome in the form of mind rape. T'Pol really would've been better written as a half human, her self control really is always close to the surface. Later episodes try to explain this away and fix this mind meld blunder as mentioned. Enterprise really just yanks the Vulcans back and forth around like a yo-yo.