Haha, yeah...it's so annoying when you actually get hit with a grenade. Sometimes when I'm playing DOD:S, and a Rifleman launches a grenade towards me, sometimes it hits me. Slows you down too.
I hav ebene wacked in the head with flashes etc. Always loose 1 health. I once blow up a enitre helicopter in BF2 with my mates hehe I got banend realy fast.