Dave - Other three that are in are the cows from a few pages back and the one with the tree right in the middle with the rays coming out either side and this one as well.
Stavro - I have a full set of hitech filters (that fit in the Cokin P holder). I tend to only use soft grads with the 0.6 most used. I have hard grads and reverse grads but I think they are only really useful for seascapes. I have B&W110 filters in both 49mm and 77mm threads. Just ordered another in 67mm as I've got a Pentax DA16-45 and a DA50-135 (just bought it 2nd hand yesterday and missed delivery man today) that will both take it. Majority of shots have been with the Sigma 10-20 - big views are useless with it at times as its like looking through the wrong end of a telescope. I'm hoping the 50-135 will enable me to highlight just the bits of a landscape that I want. To be honest the biggest influence on a landscape shot is the light. I go out for dawn regularly and the light is amazing sometimes. Lots of times it doesn't work out at all but its just a case of keeping going out there. Only other change planned anytime soon is a full set of Lee filters. A pal has them and they are superb.