How about this for a linguistic piece of art:
Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo.
That is a perfectly acceptable proper sentence according to English language rules:
http://en.wikipedia.org/wiki/Buffalo_buffalo_Buffalo_buffalo_buffalo_buffalo_Buffalo_buffalo
Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo.
That is a perfectly acceptable proper sentence according to English language rules:
http://en.wikipedia.org/wiki/Buffalo_buffalo_Buffalo_buffalo_buffalo_buffalo_Buffalo_buffalo