Well I just watched Gintama Shrioyasha Koutan
That was a OVA?
It was bloody short (just over ten minutes)
It was also very funny.
More jokes about there lack of budget
More jokes about the other characters wanting to see other anime films instead
Err 27 on the list three more needed
Might just have 25 then have a off shoot list of ones that arnt fully recommended but are good anyway