There is a STreaming service called "Retro Movie" that I just found where you can watch "Young Frankenstein", and Rocky Horror picture show on

 However, I think it has advertisements too. they also have movies like Spartacus with Kirk Douglas too and a lot of other retro stuff.

But, I wanted to watch Young Frankenstein(1974) with Gene Wilder and Teri Garr both of whom have passed away now, Teri Garr the most recently.

I was 26 years old and a new father in 1974 and married likely when this came out then. Gene Wilder Later married Gilda Radner from Saturday Night Live which I believe started in 1975 (SNL did).