Hey! I don't know if you're looking for funny game shows/pranks but the Japanese have a lot of them!

I like:

Human Tetris: http://www.youtube.com/watch?v=v9T5J7UWMm8

Japanese Ski Prank: http://www.youtube.com/watch?v=sdf8LeqYB84

I don't know if these are the type of funny shows you're looking for but hope this helps!

Good luck!

I like Youは何しに日本へ？；why did you come to Japan?

The interviewers go to Japanese airports to ask the question to the people from overseas.

Some people can speak Japanese very well. Sometimes you can see English subtitles (not all the time) and easy to understand Japanese I guess...

Hi, this funny and popular TV show might be a good one to watch! The subtitles are helpful.

ガキの使いやえらへんで!!（ガキの使い）
Gaki no tsukai ya arehende
http://youtu.be/sPIVkCyqvxo
http://youtu.be/PH85fUm8rJo

Their talk shows are also funny and have no strong accent.

サンドイッチマン
Sandwitch man
http://youtu.be/dqDfr2vZajA

Just let me know if you'd like to watch more talkative one or slower one.
I hope you enjoy!