Good for a table of statistics, or contents.
Use an unordered list to... list things, if the order of the items doesn't matter.
Use an ol when creating a list where the order of the items is important, like ranking pizza toppings from best to worst.
Think bullets are for chumps? Use class .no-bullet.
A definition list (<dl>) is used to display name-value pairs, like metadata or a dictionary definition. Each term (<dt>) is paired with one or more definitions (<dd>).
Want to use the font icons as your "bullet"? Add the class .icon-bullet to your <li> and then insert the icon code at the start of list item.
Have items you want to show horizontall and a using the grid layout is too much, here are a few of techniques:
Combine a ul with class .inline.
Combine a ul with class .inline, then give your li a .badge.
The .lead class on the ul bumps up the size of the font.
You can read more as a button, if it's a primary call to action, or a link, if it's not as important.