Berlin Wall questions.
 

Are there any sections of the Berlin Wall left that are worth seeing? If so, where are they located?

East Side Gallery is the longest stretch that remains.

You can also check out the Wall memorial site:
http://www.berliner-mauer-gedenkstae.../en/index.html

I visited Bernauer Strasse last year.
Highly recommended.

Justshootme, be prepared, the wall is not as high as one would imagine but worth seeing for historic interest...

Both the sites mentioned above are worth looking at . You can also Walk The Wall:
http://www.berlin.de/mauer/mauerweg/index/index.en.php