You might want to put somewhere that this is a spoiler for the end of Death Note. Not everyone has seen it, and it'd be horrible if someone stumbled in here and watched the videos and ruined the series for himself.
The swimming lessons thing came about because someone read the end of Death Note and thought, "Light looks like he's teaching a swimming class. Imma use Photoshop and make for some lulz." The video version was made once the final episode of the anime came out.