I keep seeing my secret stash of great old films being posted, so I figured I should join the bandwagon and let you in on it as well.
The Internet Archive at archive.org. You don't need broadband, but you do need to cast your mind back to the days of yore, when attitudes were a little different. A sample of the films you will find:
Word to the Wives, A ca. 1955 Producer: Telamerica, Inc. Sponsor: American Gas Association, National Association of Home Builders, and The Woman's Home Companion How two women trick a husband into buying a new kitchen. Descriptors: Consumerism; Gender roles Run time: 12:41 Color/B&W: C Silent/Sound: Sd Download: DiVX 4.11 19587.avi (42.4 MB) VCD 19587.mpg (140.8 MB) MPEG-2 19587.mpg (321.7 MB) Streaming: DSL/CableDialup
They also have the funniest movie I have seen in a while. If you make, sell or buy things for a living, you will want to show this one to the boys in marketing. I am sure they will actually use some of this. My company uses something very similar...
"Your Name Here" Story, The ca. 1960 Producer: Calvin Communications Sponsor: Calvin Communications The ultimate generic industrial film, built around every script and visual cliche. Descriptors: Motion pictures: Production; Motion pictures: Sponsored; Humor Run time: 10:10 Color/B&W: C Silent/Sound: Sd Download: DiVX 4.11 01681.avi (32.1 MB) VCD 01681.mpg (106 MB) MPEG-2 01681.mpg (280.9 MB) Streaming: DSL/CableDialup
I have found it helpful to do the stretching exercises my physical therapist recommends. Do some core strengthening exercises, such as the ones highlighted at The Mayo Clinic. By keeping your core strong, your back won't put itself in a position to cause that sciatica pain you are having.