Yo soy un detractor de Flash por bastantes razones (posicionamiento, usabilidad, consumo de CPU…) pero he de reconocer que se pueden hacer verdaderas maravillas si se le da un uso bueno y creativo.
Tras el salto quedan bastantes sitios webs que han hecho un uso realmente bueno de la tecnología de Adobe para realizar sitios web muy interesantes, creativos e intuitivos. Y es que si el Flash sigue siendo el preferido por muchas marcas para sus sitios, por algo será.
Fuente | HongKiat 
The 3rd Generation Prius
Tag Galaxy
Tag Galaxy is a very good flash application that uses Papervision3D with beautiful transition effects to explore Flickr photos via virtual planetary systems. You enter a tag and related tags appear with beautiful planetary systems. 
Mercedes-Benz | B-Class
The CLUE Virtual Mansion
Flash 3D game. Beautifully made. 
If Your Milk Carton MoOOos, You Win!
Case-Mate: I Make My Case
You can design your custom iPhone case in this cool Flash application. 
Plate Interactive
Creative idea with fantastic effects. 
SposiAmo
Wedding planner site from Italy. Elegant design with romantic background music. 
DG Estilistas
Cheese & Burger Society
GT3 Creative
Skoda Yeti – Catch and Win!
Lois Jeans | SPRING SUMMER ‘09
Harajuku
Christmas Tweets
IKEA Soft Toys AID
Infrared5
Pearl Jam Ten Game
Stefan Kovac – Portfolio
Flash presentation of Stefan Kovac’s selected web & interactive work. 
The Scruffs game – unofficial site
Herbal Essences Spice
Beautiful graphic design, and nice animations. The website also has game. 
TheOleg | Freelance designer
This is the site of Ukrainian freelance designer Oleg Kostyuk. 
Daniel Kusaka
Interactive Design Portfolio of Daniel Kusaka from Brazil. Interesting design. 
Wonderful Moment Project
Volkswagen Efficiency : Volkswagen UK
PIAGGIO MP3
Kasulo.ws
Portfolio of Ricardo Dias featuring web and print contents. Gorgeous design, and inspiring idea. 
Lech.pl
LECH beer in 3D 
Pritt – Knutselwereld
GOOD | How do we achieve harmony?
Verbatim Championship
Cool robots with cute animation. 
McCafé / Make Your Own Cappuccino Art
You can make your own cappuccino art and save to gallery. McCafe from McDonalds. 
HBO Imagine
TESTEMALE-PHOTOS.COM
Bernard Testemale’s professional photography portfolio site. 
Levi’s® 501® 2007
THE PROFILER™
Use The Profiler to visualize what’s behind your profile picture, and discover what goes on in your friends’ heads. You can connect with your facebook. 
Red Bull Soapbox Racer
Red Bull Soapbox Racer is a 3D racing game in Flash. 
Toyota: Every 5 seconds
Featuring Toyota cars: Yaris, Auris, Corolla, Avensis, Camry, RAV4, Prado. 
hiroshi seo / photographs TIME:LINE
hiroshi seo is a photographer from Japan. 
Hermosos ejemplos de sitios web hechos en Flash. Que son una buena opción para marcas tan reconocidas que más que posicionamiento están online para apantallar a los fans que se han ganado a base de buenos productos.
Gracias por compartirlos! No estaría nada mal buscar por ahí, cuáles hacen una buena integración de html y flash para aprovechar lo mejor de ambos ;)