Apparently, no failed TV series is so failed that it doesn't merit DVD enshrinement. Joey Fatone completists, Lainie Kazan stalkers, and lint collectors can all enjoy the sole half season of ''My Big Fat Greek Life,'' whose viewership ran thin after a pilot that mostly reasserted the movie ensemble's most annoying tics (Michael Constantine insists Greeks built Stonehenge; Andrea Martin offers the newlyweds sex tips). A hoary proficiency sets in by episode 4, when exec producer Rita Wilson, as a new immigrant, is romanced by hottie Frank Stallone. But by the finale, ''Greek Easter,'' you'll be compiling a big fat checklist of complete TV series you'd rather see. Speaking of Constantine, where's our unabridged ''Room 222?''