My goodness, that was a brutally bad episode of television. I think that about covers my thoughts, really, but just for kicks:
-Sometimes a childish and petty Barney can be funny, theoretically, but just a week after meeting his father he's resorting to something so idiotic and juvenile? Disappointing to say the least.
-I didn't care for the "graduation goggles" bit, which seemed both extremely obvious and poorly executed to boot.
-Totally don't care whether Marshall ever gets a job where he can help the environment, since it's never really seemed like an important part of his characterization. I do wish they'd just resolve this plotline once and for all.
-This was just a poorly conceived and illogical script, with shockingly few laughs and nothing interesting to see.
For comparison, I arguably enjoyed last night's Mad Love more than HIMYM, even though Mad Love, as is its custom, was shoddily constructed and hackneyed. Seriously, the episode featured one character dog-sitting her boss's incorrigible terrier. (Oh no! If she messes up her boss will totally fire her for something non-work related!)
You can do better, HIMYM.