Flash is the best way to bring out your website and let it stand out. You can have certain aspects of your website done in flash (intro, buttons), or you can have an entire flash website.

However, you must consider your target audience before you use flash. Flash requires high bandwidth and your audience would need to have adequate bandwidth. E.g. if your target audience is in Kenya, you would be advised NOT to use flash, as the bandwidth in Kenya is inadequate. If your target audience is North America, then you can comfortably design your website in flash