i watched every movie from gens 1-4 with some exceptions like "kyurem vs the sword of justice", "diancie and the cocoon of destruction", and "genesect and the legend awakened". i have a lot of fondness and nostalgia for the older movies, i think my top 3 would be "mewtwo strikes back", "lucario and the mystery of mew", and "destiny deoxys".

mewtwo strikes back is very important to me in a lot of ways. admittedly when i grew up and understood that media often has messages in them, i was pretty disappointed when i realized what the message was in the english dub. "dont fight" doesnt really work. for pokemon. the original message of the movie was along the lines of "it doesnt matter if theyre clones or originals, theyre all living creatures" which makes more sense with the context of the whole movie. i think the remake is great too personally, love the cg models.

i dont know how to explain my fondness for lucario and the mystery of mew i just like a lot about it. and yes i love the weavile too. same with destiny deoxys but two main points i like about it is, first, the character of deoxys and it just wanting to reunite with its friend, which i appreciated as a kid. and growing up i noticed and appreciated the second point, the character of tory, a kid who was afraid of pokemon due to a traumatic experience with them. its already an interesting concept to have a character who is afraid of pokemon in a world that has people coexisting with them everywhere, but its also nice to see someone manage to overcome their trauma. obviously in real life it can take much longer to do that but im just happy a character like tory exists at all in the series.
the action scene with all the block robots in the city was cool too.