Did you know that "(Sittin' On) The Dock of the Bay was his only #1 hit and didn't become so until after his tragic death? Singers should avoid chartered planes, folks. It's just good advice.
If you'd like to learn more about this song, check out the AllMusic review of the album, also named after the song.
If you'd like to learn more about Otis Redding himself, check out this quick bio or the Wikipedia article about the R+B legend. I also found a neat article from the Atlantic discussing Otis Redding's development as an artist and what his future music may have given us.
There's no official music video for this song since Otis died just four days after its recording, but here's a somewhat cheesy, somewhat interesting montage of photos and clips of Otis performing. It's somehow official so, that's good.
If you want to see how such a simple but amazing song can be kind of ruined, check out Sammy Hagar's cover.
Something about this version seems to completely miss the point. And crystallizes the terrible parts of the '70s...which is every part.