Being a big fan of Jackie Chan and fights/stunts, there are my favorite scenes from Police Story (1985) and Police Story 2 (1988). Scene selection below.

0:00 Umbrella Stunt
0:18 Street Fight
2:19 Umbrella Stunt (following)
2:53 Apartment Fight
3:51 Umbrella Stunt (following)
4:41 Mall Fight
6:04 Stopping the Bus
7:08 Mall Fight (following)
11:50 Electric Cable Stunt (most famous stunt)
14:11 Restaurant Fight
15:26 Amusement Parc Fight
19:06 Jumping on the Truck Stunt
20:02 Factory Fight