Mighty Morphin Power Rangers: The Movie featured many of the same actors from the TV series, including all 6 Rangers, Bulk & Skull, and, IIRC, the same voice actors playing Lord Zedd, Rita Repulsa, Goldar, & Alpha 5. However, the movie is most definately not in the same continuity as the TV series. The sets, costumes, & Zordon all look completely different. The story of how the Power Rangers got their Ninjetti powers was retold on the TV series in the "Ninja Quest" mini-series, which also included a different origin for the Tengu Warriors. And then there's Mordant, Lord Zedd's pig-man henchman, who suddenly showed up without any explanation in the movie, and then promptly disappeared and was never seen again.
Jason Mewes & Kevin Smith appear as Jay & Silent Bob in several films, including Chasing Amy, Clerks, Clerks II, Jay & Silent Bob Strike Back, and Mallrats. However, I understand that it's difficult to reconcile Dogma with the continuity of the other 5 movies.
I'm sure
Dogma is considers an "official" part of the
Viewaskewniverse. Even thought it was the second movie Kevin Smith wrote after
Clerks, it was made with the intention that it be the final film in that shared 'verse. But then he made the other two--
Jay and Silent Bob Strike Back, which uses elements from their comic book adventures, and
Clerks II.
At the very least, it would be kinda weird reconciling
Dogma with
Jay & Silent Bob Strike Back since the latter includes a scene where Ben Affleck & Matt Damon talk about being in
Dogma.
How about Christopher Lambert in Highlander? The continuity there is a mess!
He plays Connor McLeod in H1, and maybe the same Connor in H3 but maybe not depending on whether he actually won the game in 1; a different Connor in H2 who is an alien, or in the directors edition a man from the ancient past; he appeared in the pilot of the TV series which is in another continuity, then H4 which may or may not be in direct continuity with the TV series.
Certainly the TV series is in a slightly different continuity from the 1st 3 movies.
Highlander II &
Highlander: The Final Dimension exist in different continuities because Brenda Wyatt died 2 different ways in the 2 movies. In
Highlander II, she died of solar radiation poisoning. In
Highlander: The Final Dimension, she was killed in a car accident (which Jacob Kell took credit for in one of the deleted scenes in
Highlander: Endgame, which exists in a totally different continuity). Both
Highlander II &
Highlander: The Final Dimension want to exist in the same continuity as the 1st
Highlander movie but neither is a perfect fit.
But I wasn't aware that there was any dispute that
Highlander: Endgame took place in a different continuity from the TV series.