Of all the streets in London, Baker street would be the one that hold deep in my heart. Simply because, its the street I lived for one months while I was studying at London business school. I grew so fond of the street to a point I memorized every corner and every shop in it.
There is nothing special about the street per say, apart its most famous for its connection to the fictional detective Sherlock Holmes, who lived at a fictional 221B Baker Street address on the north of the street. So make sure you visit the address and pick up Sherlock Holmes memorabilia while you are there.