Episodes of Timmy being selfless in season 5.
We talk a lot about how Timmy became a lot more of a selfish prick in season 5, and it's true in some places... but I would like to remember some moments where he was kind and selfless in S5 as well. Like...
Be Young Adam West- Where he wishes Adam/Catman to be a kid again after figuring out he never had a proper childhood, which is really nice. And he also was completely ready to face the cops and defend him in the ending.
Birthday Wish- He wishes Tootie to have Cosmo and Wanda for her birthday, a obvious one. Pretty sweet.
It's a Wishful Life- Yeah, this episode is pretty infamous and bad for a good reason, but we can't argue against Timmy was being nice and selfless in all the things he did for Bickles, AJ, and his parents at the beginning (and he did all with his own hands alone, without magic!). He had every right to be angry at their ungratefulness.
Teeth for Two- Maybe can be a bit stretched, but he helped Jorgen to make up to Tooth Fairy and Tooth Fairy to forgive him. Jorgen even showed gratitude for it.
Masked Magician- He wished to be a real magician to save his parents' Block attraction and even helped a lot of people afterwards. He even helped Mr. Bickles at the ending even after he tried to destroy the town out of pettiness.
It can have more examples, but by now, yeah... he wasn't completely flanderized in this season.