It's really important to think about who your customers are before you commit to specific concept for your video.  Most people today are looking for solutions to their problems.  If you and your company can offer them solutions, then they will get you business.  

Unfortunately, some agencies and creative people think that a "funny" ad will create buzz about their product or service.  "Buzz" doesn't pay the payroll and doesn't buy inventory.  Cash money does.  Cash money comes from customers who feel confident in purchasing your product.  Use your web video to inform you customers about you and your products.