Lazzarella by Domenico Modugno. Not a traditional milonga but definitely something fun.
Ella Es Así by Cachivache Quinteto (originally Edgardo Donato & Horacio Lagos). Pablo & Sofia rock this milonga. Fun & beautiful.
A quirky and super fun milonga: La endiablada by Juan D’Arienzo. Ariadna & Fernando are an absolute blast. Not only do they make Tango look easy, but they also put a ton of fun into everything they do. This milonga is a perfect example of their attitude towards tango!