+1 on great choice, for my T1i got both kits lens back in Nov-2009 as package when bought the T1i, 18-55 IS and 55-250 IS, both are great starter lens. You can stick with them or decide if you want to spend $$$ and grow with the hobby in specific area.
fwiw, I've just recently "moved up" to the Canon 15-85 IS but will keep the kit 18-55 IS as back-up. Taken many-many shots with the 55-250 IS. That's my long zoom lens until I save $$$'s for the 100-400L (a 2011 want).