Officina
TheSerif and TheSans
Vista Sans and Vista Slab

Thanks I should have got Thesis at least, doh!

Not sure if this qualifies as a super family...
Morgan Sans, Morgan Avec, Morgan Poster

Another that fits the slab and sans bill, but maybe not the super...
Stag Sans
Stag

Panoptica

>Another that fits the slab and sans bill, but maybe not the super..

FP Dancer Sans, FP Dancer Serif.
http://www.fontshop.com/search/?q=FP+Dancer&x=16&y=13

Not available in digital, AFAIK, but Nebiolo’s Forma and Linea can be considered a slab/sans superfamily combo.

Stainless + Dispatch
United
The Guardian types
FF Absara
Soho