Eat

La Gondola, Taina Rd (200 m from Kata Centre). Trattoria-style Italian restaurant with a wide menu of classic Italian dishes. Pizza and seafood. Large portions at reasonable prices.
Le Gran Prix (on Taina Rd). Casual little French restaurant. Food is good and prices are reasonable.
The Red Chair Cafe (Koktanod Rd). 11:00-22:00. A great place for Thai food. Food is cheap, service is good, seems clean. Popular with locals and expats.70-120 baht.
Red Chair Plus (Koktanod Rd). Up-scale, serves Western and Thai food. Try the excellent fajitas.200+ baht.
Summer Coffee House, 184/1 Khoktanod Rd (road between Kata Yai and Kata Noi). 09:00-22:00. Nice air conditioned cafe with Internet stations and free Wi-Fi. Purchase of a drink gets you 15 free minutes of Internet access. Has good pastries and desserts.
The Tube, Koktanod Rd (across from 7-11, walk east on Koktanod Rd, away from the beach and main road). 19:30-?. Excellent all-you-can-eat BBQ. Chicken, pork chops, ribs, salad bar, bread, and baked potatoes. Try the delicious chili. Watch surf movies while you eat. Owners are super cool.199 baht.