It's not normally a major disaster on a web site unless the number of missing or broken links is excessive. Broken graphics links become important if they are used as links to other pages. Then there's the matter of tidiness and professionalism. We'll deduct from 5 to 50 points for broken or missing links depending on how bad or critical they are. Yes, pretty graphics do make a page attractive.
Animated graphics have a fascination of their own.
However, a page filled with useless, oversized or inappropriate graphics is an annoyance all the way around. They increase loading time of the page, confuse the organization, clutter up information, etc. Graphics should be used judiciously and appropriately. If they're not of your own creation, proper credit should be given to the artist who provided the graphics. If, however, you direct us to a long-loading page full of useless, unneccessary graphics without giving us advance warning, we may deduct up to 10 points for you wasting our time.