Admittedly I actually have mixed feeling about Act Your Age, it had some funny moments (like Swampy crying at the end) but I kind of felt like it was a contrived resolution to something they had been building up for a while, plus I find it hard to suspend disbelief that Isabella's feelings towards Phineas didn't raise an eyebrow once in an entire decade. Like yeah I know Phineas doesn't really get romance or is good at picking up Isabella's feelings, but it just feels weird the subject never seemed to come up once in that giant span of time, especially since lots of teenagers IRL talk a lot about dating (I guess Phineas is really focused on his projects then, which is sort of implied in the song I guess? ). I know many people do like it and I see why (especially if the ship Phineas and Isabella), and I kind of did at first, it just didn't really work for me overall once I started thinking about things (and these are character things I think about, not so much stuff like "how do they build that in mere minutes?" which honestly aren't really worth thinking about). IDK, maybe it just wasn't for me.
On another note does anyone have any favourite songs? I love a lot of them so it's hard to pick, though I have had In the Empire in my head an awful lot lately, and in general I really like Candace, Isabella and Doofenshmirtz songs (and yes I was super hyped for the Candace and Doof duet in the finale, as well as Candace and Isabella's), though to be honest all of the cast who sing are great at it. Actually wished Carl the intern sung more, because Evil for Extra Credit is another favourite of mine. Better stop before this is me spamming links to songs. XD