That's pretty weird of LG to not include a DVI cable, seeing as it's more or less the defacto standard these days.
I don't think the Samsung's lack of HDMI is a big deal; HDMI is more or less DVI with the ability to transmit audio. In fact, I'd be a bit concerned with the LG, as its specifications don't show it having HDCP compatibility, nor does the website. In case you decide to run Blu-Ray, or any copy-protected media now or in the future, not having HDCP could mean incompatibility.
Looking at the two, the Samsung appeals more to me. Yes, it's slightly smaller, but their LCD panels are brilliant, and I love mine to death. Also, the forward-thinker in me is looking at the bezel of the Samsung and notices that it looks thinner than the LG's, should a dual-monitor setup or Eyefinity be a possibility in the future.
BTW, Food for thought:
http://www.newegg.com/Product/Product.aspx?Item=N82E16824001389R&cm_re=24%22_led-_-24-001-389R-_-Product
Look at all that real-estate. I'd be tempted to take a gamble on that one, even if it's open box. Sometimes they lack the cables and driver disc, but then how much is a DVI cable? My only concern would be dead pixels.