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We were looking at the LG 42LY95 42" HD Ready 1080p Digital LCD TV which only has HDMI connectivity. It is listed on the Curry's website as:
2 x HDMI digital connectivity
Other TVs are listed with, for example:
Inputs - 2xHDMI, 2xSCART, 1xComponent, 1xPC
This presumably means that the LG 42LY95 could ONLY be connected to a computer with an HDMI output. The HDMI plug is physically different to a USB plug, even though it looks quite similar.
When I looked in Curry's, only one of the laptops they had in store had an HDMI output.