After “20 weddings, 20 punches thrown, 40 births, 50 dancing it outs, 100 hookups, 332 episodes, 400 seriouslys and 1,500 surgeries,” tonight’s episode of “Grey’s Anatomy” will make it the longest running prime time medical show on TV!

I’ve been a Grey’s Anatomy fan since day one (I recently re-watched every season on Netflix)!  I can’t wait to see what’s in store for tonights “15 X15” episode which is the 15th episode of the 15th season of Grey’s Anatomy.  It’s also the episode that dethrones ER (George Clooney was an original cast member of this medical show) as the longest running prime time medical show on television.  E! News did a numbers comparison of the two shows that you can check out here.

Grey’s Anatomy calculated some numbers for fans in this new promo for tonight’s episode complete with Mark Sloan’s steamy towel scene!

Grey's Anatomy

Countless OMG Moments have led us to TONIGHT! ???? #GreysAnatomy15 starts at 8|7c on ABC.

It’s nice to reminisce about the beginnings of Grey’s Anatomy.  I can’t wait to watch the record-breaking episode tonight!  Tune in tonight at 8pm on ABC.

Grey's Anatomy

If these walls could talk ???? Celebrate #GreysAnatomy15 with us TONIGHT at 8|7c on ABC ????