(Hopefully this tactic is still featured in Sense 5)
When browsing a long list of Artists in Music or Contacts in People, you can try scrolling with 2 fingertips touching the screen and you may find that it will scroll quicker by first letter. You can jump down to 'P' in a simpler manner
There is also probably a small scoll bar on the right edge of the screen, if you are quick and accurate you may be able to grab that bar with a fingertip. For example in Messages, when you can grab the scroll bar, it will let you scroll a really long conversation thread by date.