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Although the obvious big deal about the “Friends” reunion was that the six original cast members would be gathering together for only the second time since the sitcom wrapped in 2004, the HBO Max special didn’t JUST give fans Jennifer Aniston, Courteney Cox, Lisa Kudrow, Matt LeBlanc, Matthew Perry and David Schwimmer.

Also making appearances were everyone from series guest stars including Reese Witherspoon and Tom Selleck, to such celebrity super fans of the series as David Beckham, BTS and Malala Yousafzai, and icons in their own rights Justin Bieber and Lady Gaga. Many shot off-site interviews that served as added color around the event happening on the Warner Bros. lot in Burbank, Calif. But Selleck, Bieber and Gaga, among a number of others, appeared in-person on the old “Friends” stomping grounds of Stage 24.

Here, Variety ranks the best in-person guest appearances in “Friends: The Reunion.”