Government organization
http://www.tat.or.th/ Tourism authority of Thailand, informations on local festivals and places
http://www.mfa.go.th/ Ministry of foreign affair, information on visa, etc.
http://www.police.go.th/ tourist/ Tourists police
http://www.bot.or.th/ bothomepage/databank/FinMarkets/ExchangeRate/exchange_e.asp Foreign Exchange.
http://www.suk11.com/embassies.html addresses of Embassies in Thailand

Transportations
http://www.srt.or.th/ State Railway website
http://www.bmta.motc.go.th/ Bangkok Mass Transportation (buses) website
http://www.bts.co.th/ Sky train
http://www.airportthai.com Flight schedules, airport information
http://www.thaiair.com/ Thai airway international
http://www.bangkokair.com/ Bangkok airway

http://www.oocities.org/suk11gallery/bus.htm Schedules of Goverment buses (taken from official Thai website at http://www.transport.co.th
)

Information for Thailand
http://www.oocities.org/suk11gallery/accom.htm list of accomadations with website around Thailand.
http://www.into-asia.com/ Very informative site about Thailand
http://www.thaistudents.com/ Guide to Thailand by Thai students, great site!
http://www.ajarn.com/ living and teaching in Bangkok.

Entertainment/general information
http://www.bangkokmovies.com/ Movies of various spots of Bangkok, nightlife, temple...
http://www.stickmanbangkok.com stickman guide to Bangkok
http://www.groovybangkok.com/ Guide to all the Bars and Entertainments around Sukhumvit area
http://www.farangonline.com/ Magazine with Travel tips and also discussion forums
http://www.bkkmetro.com/ Bangkok magazine with list of evenst going on in Bangkok
http://www.thailandlife.com/ life of a thai student

Nightclubs, Pubs and Bars