Wing sings AC/DC, Wing sings Elvis, Wing sings more [sic!] AC/DC, ...
Lots of '60s garage bands did awesome covers of old blues standards, TBH.
after all those years, Van Halen's "You Really Got Me" is still a permanent part of my playlist and beats imho the original version of "The Kinks" by miles
Much better than the original: Pomplamoose - Telephone by Lady Gaga.They also made some other great covers.
Do you guys have examples of very good (maybe even better than the original) or very bad cover versions of songs?