Yes, it’s true! Geek Dad appeals not just to parents that are geeks, but to parents who have a geeky side (or are just intellectually curious and want some great ideas). 1 Prince and 3 Princesses gives an enthusiastic review. Some choice bits:

Ken has created the ultimate, idea-packed guide guaranteed to help dads and kids alike enjoy the magic of playtime together and tap into the infinite possibility of their imagination. With illustrations throughout, this book offers projects for all ages to suit any time frame or budget.