The Happy Days 30th Anniversary Reunion show on ABC last week was rather interesting. I think it's the first time I've seen a reunion show done which had participation from ALL the principal characters. They've luckily had no deaths nor bitter feuds which would've caused someone much loved to be missing.
The format of the show, though, borrowed heavily from last year's Dallas Reunion. The first hour had clips hosted by the stars at their "home" (Southfork for Dallas, The Cunningham residence for Happy Days), then the second hour had a "live on stage" reunion at a familiar show set (The Oil Baron's Ball for Dallas, Arnold's for Happy Days), and both even had "Special Surprise Appearances" from (in)famous guest stars towards the end of the shows.
I have a feeling we're in for a lot of other 70s-80s TV Show Reunions in the next few months...