Watch: The Flash Vs. Arrow Fight
The good news is that ratings were pretty high for the event, so more than likely we'll be getting more crossovers in the future.
Now a fan has gone and uploaded the fight scene between Grant Gustin and Stephen Amell on to YouTube.
Relive the excitement below.
The Flash's mid-season finale airs Tuesday featuring the Reverse Flash; Arrow's airs Wednesday featuring Ra's Al Ghul.