This Hanna Barbera production of Alice in Wonderland (subtitled What's a Nice Girl Like You Doing in a Place Like This?) is updated to contemporary suburban America. The familiar tale is changed to reflect the times beginning with Alice's (Janet Waldo) journey, which isn't down a rabbit hole, but through a television screen. She meets the requisite assortment of characters including the White Rabbit, Cheshire Cat (Davis Jr.), the Queen of Hearts (Gabor) and the Mad Hatter (Harvey Korman) who, in this version has a wife played by Hedda Hopper. Also featured are Fred Flintstone and Barney Rubble (Alan Reed and Mel Blanc) as the Talking Caterpillar.
As far as I can tell, this production of the classic story isn't available on DVD. It can be seen in full on YouTube, however. Above is part one, uploaded by OneDareLand.
Obscurity factor: 9 (not on DVD, available on YouTube, not well remembered)