Question:
A Senate committee has 5 Democrats and 5 Republicans.  In how many distinguishable ways can they sit around a circular table if all the members of each party all sit next to each other?  (If the table is rotated, it should be counted as the same seating.)

Answer:
Choose any 5 consecutive seats in which to place the Democrats -- it doesn't matter which 5 consecutive seats that we choose, since we can rotate the table.  Then there are $5!$ ways to place the Democrats in their seats, and $5!$ ways to place the Republicans in their seats, for a total of $5! \times 5! = \boxed{14,\!400}$ arrangements.