Daisy Geyser erupts for three to four minutes up to 75 feet (its interval is anywhere from two to four hours). It's a cone geyser that erupts at an angle - which would've been neat to get a picture of (I opted instead for the moon). Daisy's eruptions can be affected by the nearby Splendid Geyser (and the two have erupted concurrently which apparently was pretty amazing).

An interesting factoid on Wikipedia:

Daisy Geyser was one of the Yellowstone geysers that had its eruption interval disrupted by the 2002 Denali earthquake, in Alaska. Immediately after the quake, the interval rapidly decreased but returned to previous intervals over the course of a few weeks.