Ferries. One of the most enjoyable things to do in Hong Kong is to ride the humble Star Ferry between Kowloon and Hong Kong Island. The views of the island are superb, particularly at dusk when the lights begin to twinkle through the humidity and the spray. You'll also get a feel for the frenetic pace of life on Hong Kong's waterways, with ferries, junks, hydrofoils and larger ships looming up from all directions. You can ride upper deck ($2.20) or lower deck ($1.70). Ferries run every few minutes between Tsimshatsui and Central (a 7-minute ride; daily 6.30am-11.30pm), and between Tsimshatsui and Wanchai. There are also similarly cheap and fun ferry crossings between Hung Hom and Central.
In addition, a large array of other boats run between Hong Kong and the outlying islands, most of which use the piers immediately north of Exchange Square.