These are pretty funny! There's a bunch more on youtube.
Abe Lincoln vs. Chuck Norris
<object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/zj2Zf9tlg2Y&feature=relmfu"></param> <param name="wmode" value="transparent"></param> <embed src="http://www.youtube.com/v/zj2Zf9tlg2Y&feature=relmfu" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object>
Hitler vs. Darth Vader
<object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/kEA63BgFz4A"></param> <param name="wmode" value="transparent"></param> <embed src="http://www.youtube.com/v/kEA63BgFz4A" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object>
Mr T vs. Mr Rogers
<object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/7ZsKqbt3gQ0"></param> <param name="wmode" value="transparent"></param> <embed src="http://www.youtube.com/v/7ZsKqbt3gQ0" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object>
Abe Lincoln vs. Chuck Norris
<object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/zj2Zf9tlg2Y&feature=relmfu"></param> <param name="wmode" value="transparent"></param> <embed src="http://www.youtube.com/v/zj2Zf9tlg2Y&feature=relmfu" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object>
Hitler vs. Darth Vader
<object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/kEA63BgFz4A"></param> <param name="wmode" value="transparent"></param> <embed src="http://www.youtube.com/v/kEA63BgFz4A" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object>
Mr T vs. Mr Rogers
<object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/7ZsKqbt3gQ0"></param> <param name="wmode" value="transparent"></param> <embed src="http://www.youtube.com/v/7ZsKqbt3gQ0" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object>