There's an article of Bak Kut Teh here
http://www.asiacuisine.com.sg/nacws/arch_sub.php3?section=Cuisine&id=1393&author=KTOne of them they have mentioned is damn good - the Outram Park Hua Rou Gu Cha - which isn't at Outram Park but at Tanjong Pagar Complex along Keppel Road. It's open from 7am to 3pm and closed on Mondays.
I think a testament of how good it is comes from their customers - they're cute old fogeys who come by almost everyday. The soup is peppery and i find it's a bit more herbal than usual. His kiam chye is also really nice - not too salty - and the dough fritters are fresh too!
oh and if you're into celebrity endorsements, the two side walls of the coffeeshop feature a lot of pictures of actors and actresses who have patronised the stall before
