東方妖々夢 scoring highly recommened, Zil.
Okay, okay. Not funny. (PCB is really hard to score well in and while it - is - mainly unfocused play, focused calculation every now and then is needed, to time borders)
Uhm, I hardly know about non-Touhou shmups, but DOJ was funny when I tried it a bit. Also you should try out Trigonometry Wars (4 is the newest), since the have been done with the cool "not overly serious" way. Also the game's inbuilt instructions manual is probably the best manual I've ever read.
For Touhou shmups, if you're not appealed by scoring, you could try some conditions. Or ultra patches, hey. Those tend to be rather funny.
Let's Play Mountain of Faith Ultra?
I remember playing it while streaming due to Vanhaomena or Cactu's request. I liked it, we had fun and I got raped by everything. It has it's perks, like every ultra. You just need to go around the bullshit for the sweet bits, Esupanitix.
And MoF ultra is far call the most bullshit ultra I've played. Compared to Night of Imperishable HORRIBLERAPE's midboss Wriggle card, ultra VoWG is a joke. And I've had a lot of fun with HORRIBLERAPE as well. You just need to have a kick for the stuff, and avoid the most horrible shit.
Also, Zil, you should go to #Ijiyatsu for all those big boy's shmup players.