TM Point doesn't accept AMEX. You need to look for the AMEX logo or you can just ask the cashier whether they accept AMEX or not. Anyway, below is the list of merchants that accept AMEX.
- Kinokuniya Bookstore
- MPH Bookstore
- Times Bookstore
- Carrefour
- Giant
- Tesco
- Cold Storage
- Guardian
- Watson
- Parkson
- Isetan
- Jaya Jusco
- Metrojaya
- Uda Ocean
- Shell Station
- Petronas (**need to pay at counter)
- ASTRO (**over the counter, by phone or auto-debit only)
- Speedy Video
- SONY STYLE
- DELL
- Chocolates shops in KLIA
- Certain cafe outles in KLIA
- KLIA Express
- KLIA Airport Limo
- Air Asia
- Well known hotels such as Mandarin Oriental, Hilton, Hyatt, Le Meridien, JW Marriott, Westin etc.
- All major hospitals
- All the high-end retail stores in KLCC, Pavillion, Mid Valley, The Gardens etc.
- Most major restaurants such as Pizza Hut, Sushi King, Amarin Heavenly Thai, C-Jade, Athena etc.
- Starbucks
& many more. Just that i couldn't remember all at once.
TM only accept AMEX for auto-debit.
A big mistaken, obviously. You should always carry a VISA and/or Mastercard with you all the time, along with your AMEX. But at least you have the SONY VISA

Great sharing there bro. I think thread owner should update this at front page so other user can easily find the list of merchants that accept Amex...