The video on these Sandy Bridge CPUs (2xxx series) is decent for non-gaming stuff.
My laptop has an older i5 540M that while it delivers good battery life (4+ hours on the 6-cell) leaves something to be desired for performance. Some of it is probably bad software but plain office-type tasks can have sluggish video performance at times.
On the other hand I built my HTPC with an i5-2300 and have the option to add a (half-height) video card. I haven't seen the need, it has handled everything I've thrown at it quite smoothly.