As an ex-prop forward, I have to say scrums (especially), rucks and mauls are a fascinating part of the sport. These aspects are what really differentiates the game of Rugby Union from Rugby League.

Regarding cricket, this too is an evolving sport. The emergence of T20 (20 overs per team) has a completely different appeal to 5 day Test matches. Try watching a game of Indian Premier League (IPL) or Australian Big Bash cricket. Batting is back in the ascendancy, with sixes and fours galore. Very much mass appeal, light sporting entertainment.