Ive found their full albums dont catch on as quickly as a couple of their songs. Theyr'e still good, I Like しか alot for example, but it took a little warming up to.
Their albums+download links are all on http://iaodaisuke.web.fc2.com/hasamigroup/sound.html
and apparantly new ones will go on https://hasamigroupongen.tumblr.com/
though there are a couple with dead links, and one that they charged for, is 'sold out', and I cant find anywhere. the one that had 病気が治ったら on it. one of their best. https://www.youtube.com/watch?v=CQ-DZfQhXcc
as for the Puffy cartoon, I dont remember whether or not it was any good, but I do recall that when showed it they asked, "why'd they make us lesbians?"