The Takakkaw Falls in Yoho National Park are spectacular and definitely worth to visit. The waterfall is viewable from the Yoho Valley Road (not always open!) visible and especially the "leaping water" on a natural platform makes it impressive. Total height: 384 meters. Longest free fall of water: 254 meters. (Figures wikipedia 2012.) The Takakkaw falls is the number two from Western Canada in terms of height.
The Takakkaw Falls were featured in the film "Last of the Dogmen" (1995, written and directed by Tab Murphy).