I liked this episode.It had nice plot,being filled with interesting events like there existing special lace with crystal which can rejuvinate electric types and of course appearance of Legendary pokemon Zapdos.
Going from start it was funny seeing rather intense ton of conversation Ash and Misty had backed with witty remarks,just to whitness one of usual failed attempts trying to steal Pikachu coming from Team Rocket.
It was nice seeing teamwork from all electric types trying to help Zapdos in end everything ending in good way with Zapdos paying them off by recharging crystal.

Unexpected and good.