For those remembering names in pop sitcoms' credits, an accomplished writer and producer (and occasional highlight of laugh tracks!), within and outside of Norman Lear's organizations, before co-founding Castle Rock Entertainment with colleague/later WB boss Alan Horn, Rob Reiner et al, and shepherding "Seinfeld" its entire run... taken by Erdheim-Chester disease, a rare blood disorder, Feb 25th; 77.
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