TIFF is generally unnecessary for printing, a high quality jpeg is more than enough. I have 50" prints from jpegs that look awesome, and I've done head to head comparisions and seen no difference. TIFF is better if it's being incorporated into a book, as you don't want to use lossy formats if it's being manipulated.

I give my customers images in two sizes, one is Q10 sRgb jpeg at native camera resolution, the other is around 900 pixels which is ideal for facebook. That'd work for TVs as well, though resolution may be a touch low.