I have problems finding MHL cables in Singapore for my Galaxy Nexus. MHL stands for Mobile High-Definition Link and here is the definition from Wikipedia:

Mobile High-Definition Link (MHL) is a proposed industry standard for a mobile audio/video interface for directly connecting mobile phones and other portable consumer electronics (CE) devices to high-definition televisions (HDTVs) and displays. The MHL standard features a single cable with a low pin-count interface able to support up to 1080p high-definition (HD) video and digital audio while simultaneously charging the connected device.

Samsung MHL Cable - Package
Samsung MHL Cable – Package