Awesome / Tokumei Sentai Go-Busters vs. Kaizoku Sentai Gokaiger: The Movie
Ryuji fighting on his own against Joe and Luka. Joe even starts to run off quickly as Ryuji prepares his enhanced strength Super Power, barely escaping the shockwave created when he pounds the ground ("GO!").
Pretty much the entirety of the latter half of the movie, starting with the group transformation and continually ramping up from there.
The Gokaiger take down avatar duplicates of Basco and Damaras, and the Go-Busters defeat yet another Escape copy.
The Kyoryuger make an excellent first impression, especially with their mid-battle roll call.
The Gokaiger getting their revenge on Bacchus Gil, while the Go-Busters, whose Buddyroids have been essentially reverted back to "factory settings" take on Enter's Megazord. The Go-Busters' refusal to abandon their beloved partners even in the face of certain death brings back the Buddyroids' personalities, and the Gokaiger and Go-Busters bring the fight to Enter and an enlarged Bacchus Gil.
Also? The Gokaiger learn the ultimate power of the Go-Busters: their bond with their Buddyroids, which manifests in the form of giant Ranger Keys which allow the mecha to transform into a menagerie of Legend Mecha. Seeing GoZyuJin turn into the originator of the word "Megazord" is pretty damn satisfying, along with all the other showings.
The dance ending is one part this and one part funny. Especially for J's suit actor. Special props to Gai's backflip at the end, too.