I've been known to favor a salacious headline and I suggested the premise here, so spoiler alert: yes. The combination of stakes, backstory, and game quality say yes, yes, yes.
Game 7. Opponent holds the best regular season record of any team in the history of the sport. Opponent also has universally acknowledged handsomest, "disruptingest," game-of-H-O-R-S-E-winningest player of all time, plus a likeable bad guy to boot. Previously down 3-1. Town without a championship for 52 years. Hometown hero. Who just happened to have jilted said town for a sexier city seven years before, only to return to hometown with the express intention of bringing said town a 'chip. Hometown hero is also just happens to be the most maligned pro athlete ever, which is crazy, but also, like, storyline No. 7 here.
What's the comp? Start with the great Super Bowls I've seen: XXV was Norwood's miss; XXXIV was the Rams stopping the Titans at the goal; various Vinatieri last-second field goals for the '00s Pats; XLII was the Tyree catch; XLIX was the Butler interception. Great games all, complete with self-attendant Super Bowl hype. If Tom Brady had been originally drafted by the Patriots (No. 1 overall as an 18-year-old); played four seasons with the Cowboys alongside Terrell Owens and LaDainian Tomlinson, and then returned to the Pats, then we could talk. Pats/Boston would also have to be lovable losers.
Recent Game 7s? 2013 and 2010 NBA Finals come to mind immediately. '10 was a tight game but nothing like this one; '13 was completely overshadowed by Game 6 that year. Game 7 of the 2014 World Series saw a team that had been crappy for 30 years win as a wild card. There was no LeBron James in that game, tho. (The fifth-most famous player in this year's NBA Finals is more well known than all of the players in that series combined.) Game 7 of the 2006 NLCS (if Mets had won); Game 7 of the 2003 ALCS (if the Yankees hadn't lost to the Marlins in the World Series); Game 7 of the 1991 World Series (OK, this one might actually rate, but all of my co-workers were 2 years old back then).
Almost all college sports championship games are winner take all, and college sports are fun, and sometimes the games are weird and exciting because there are a lot of 19-year-olds playing and they don't know what they're doing half the time. But for that reason alone, no.
Game 6 of the 2013 NBA Finals; Game 4 of the 2004 ALCS; Game 6 of the 1986 World Series; any number of NFL conference championship games. Also great games, but not Game 7s.
My normally boisterous-in-the-summer block in Brooklyn was quiet tonight, because of this game. Serious momentum swings. The never-out-of-it nature of the Warriors (20-plus point leads are not safe with that squad; the Cavs led by 7 at the most in the second half). Draymond's kick to the nuts (various, earlier in playoffs); Draymond's kick to the nuts (5-of-5 from beyond the arc in the first half). J.R. Smith, the good, J.R. Smith, the bad, J.R. Smith the WORLD CHAMPION. LeBron's block (first half) LeBron's block (second half). LeBron, LeBron, LeBron.—Jack Erwin