Songs that sound weirdly like other songs

[Annubis]

Yggdrasil brought up Darude - Sandstorm in the Youtube thread and it made me remember one thing I always thought was puzzling.
Darude - Sandstorm sounds really similar to Lautsprecher - Omnibus

Darude - Sandstorm
http://www.youtube.com/watch?v=m0PyoiNX7zI

Lautsprecher - Omnibus
http://www.youtube.com/watch?v=4s4FZb-a8kk
(if you skip the really long intro)
http://www.youtube.com/watch?v=4s4FZb-a8kk&feature=player_detailpage#t=139

Another one that's even weirder to me is that the beginning of the ending theme of harem anime Ichigo 100% sounds incredibly similar to Vengaboys - We like to Party.

Hinoi Team - Ike Ike
http://www.youtube.com/watch?v=8_zQdoWbcHw

Vengaboys - We Like To Party
http://www.youtube.com/watch?v=fWsxSeqdyTw

[Dice]

http://youtu.be/hBAOnLtp2yI
Haunted Junction Opening (10 seconds in)

http://youtu.be/dQw4w9WgXcQ
Rick Astley's "Never Gonna Give You Up"


http://youtu.be/1GWMvCXdsG4
Watch Mojo's list of Top 10 Ripped Off Songs
They cite a lot of the ones that indeed had lawsuits follow though

[Dincrest]

Reminds me of that controversy 5 years ago with Joe Satriani and Coldplay.  http://www.youtube.com/watch?v=eb49QuPLuHg

[MeshGearFox]

Chrono and the Triggers - Old Guy Under the Lamp Post (in SPAAAACE)
https://www.youtube.com/watch?v=Z1FnOqhx4Rs

XTC - Rook
https://www.youtube.com/watch?v=4wcyuF8qjBU

Also

Dr. Dre - ____ witta Gun
https://www.youtube.com/watch?v=c0lP6mVSHa0 (NSFW cause it got bad words)

A Tribe Called Quest - Sucka ____
https://www.youtube.com/watch?v=c0lP6mVSHa0 (NSFW cause it also got doity language)

ALSO THAT PARTIAL COVER OF COMPUTER LOVE THAT COLDPLAY DID SOUNDS A LOT LIKE COMPUTER LOVE.