This was a fitting way for Sinnoh to end. This is one of the few episodes that made me a bit teary, partly for Dawn, but mainly for Brock. I know people really started thinking Brock was boring, but I never thought so. He was intelligent, caring, and kind. It's hard to let go of a character that stuck around since episode FIVE (minus OI). Brock...you race ambiguous, awesome, squinty eyed cook, you will be missed. By the way, I think the writers did a good job with Brock's goodbye. Thing is, the episode was sad enough. It would've been really depressing if Brock had some emotional crying sendoff. The handshake served its' purpose, and it showed that both Ash and Brock care about each other, but are confident that they will follow their dreams no matter what.
Overall, great, emotional episode. 10/10