CenterStage Mall
Sector 18
Sector 18 atta market, behind the radisson.
Great India Place
(http://thegreatindiaplace.com/), next to sector-18, noida. big cinemas cineplex, slick and pricy spoon food court on the 3rd floor, big bazaar department store, somewhat forlorn amusement part outside.
Spice Mall
Sector-25 A
Features a multiplex with 8 screens.
Shopprix Mall
Sector 61
Sector 61. small, somewhat scruffy shopping mall with a good selection of restaurants and a small subhiksha supermarket, but little else to recommend it.
Shipra Mall
Indirapuram
This is in gaziabad but just touching sec-62 noida you can visit this mall too.
Noida is filled with malls and shopping centers.
Apart from that Noida is filled with old style Indian markets like Atta, Indira Market, Choura, Khoda, Chellara, Harola, Naya Bans etc.