I just checked out the Wikipedia page on Landis, and it says that while the tragedy supposedly haunts him to this day, he has never admitted any culpability for it, which I find rich given that the kids in question should never have even been allowed on the set due to the labour laws.
Interestingly, Landis is also known for involvement with another film associated with a famous lawsuit: Coming to America. Art Buchwald sued Paramount for stealing the idea for that film, and won.
Landis himself was litigious when it came to the Belushi biopic Wired, which is why the makers of that film did not dare to refer to the character that was supposed to be him by name.
Now, for Landis' films itself, I think An American Werewolf in London was his best film. I have never actually seen any of Twilight Zone: the Movie besides the segment that John Lithgow was in. Landis hasn't made a decent film in years. I look at his filmography and I see Oscar, Beverly Hills Cop III, and Blues Brothers 2000. I have so far refused to see the last of those because I don't want my feelings for the original Blue Brothers movie sullied. Beverly Hills Cop III's suckitude is well known and needs no addressing, and Oscar is just painful to watch. There is not one laugh to be found in that movie.