Yep, www.yousendit.com is good, but the file expires after 7 days or 25 downloads, whichever comes first. Last tmie i check, www.youshareit.com (AKA Mega Upload) has no limit ^^
i use http://megaupload.com shows you how much your file has left and tells you how fast it's going. Also the file limit is 500 mb.