The Tower Expert is a fork that people usually upgrade to, it doesn't seem to come stock on many bikes unfortunately.

Tower Expert:
http://salsacycles.com/bikes/el_mariachi_3
http://salsacycles.com/bikes/spearfish_3

http://www.merida-bikes.com/en_int/b...Nine+TFS+900-D

Tower LTD:
http://www.merida-bikes.com/en_int/b...g.Nine+TFS+900

Tower Comp:
http://www.univega.com/de/bikes/mode...6-30-g-xt.html
http://www.univega.com/de/bikes/mode...5-30-g-xt.html

http://www.fujibikes.com/bike/details/outland_29_15_d

http://www.corratec.com/en/bikes/mou...rbow-race-29-0
http://www.corratec.com/en/bikes/mou...-cross-01-gent

Tower Pro:
http://www.corratec.com/en/bikes/mou.../2013-x-bow-29
http://www.corratec.com/en/bikes/mou...rbow-team-29-0

The 'LTD' and 'Comp' are probably OEM versions of the 'Expert' and 'Pro'

It looks like Corratec had a few models from last year with the Tower Expert.