Hook is a pretty strange license to use for an arcade game, and I don't think it was terribly successful as a result. I saw it once in an arcade as a child and never encountered it again until now.
Though it doesn't offer any innovations to the genre, it's still a fun little 4-player beat-em-up/belt scroller. The fact that it was never ported makes it particularly appealing to me.
Tengai/Sengoku Aces
This game is a horizontal shooter by Psikyo. Shmups require a lot of practice and repetition, so I love how they randomly shuffle the levels in Psikyo games to keep things interesting.
I also enjoy that, instead of spaceships or airplanes,this game uses little human characters, one of whom is blatant fan service.
I'm not sure how long either will remain in my collection, but it's great to finally get some new boards and mix things up in the game room.