The sentence has exactly 9 words in it, composed of 43 letters.
Most sentences don't.
Not only that, but this sentence contains all the words:
"Something is unusual about this sentence, what is it?"
Most other sentences don't use those words.
This sentence is also entirely unique in that it is the topic of this
particular discussion thread. Not all English sentences can claim that.
In fact, most non-English sentences cannot claim it either!
This sentence is very unusual in that it was posted at
Sat Apr 05, 2003 4:30 pm.
Most sentences you find on the internet were created at a different
time from that, and by a different author too!

The unusualness of this sentence is limitted only by our time, will,
and imagination... Am I correct? :wink: